155900196 has 27 divisors (see below), whose sum is σ = 394270513. Its totient is φ = 51941760.

The previous prime is 155900191. The next prime is 155900197. The reversal of 155900196 is 691009551.

The square root of 155900196 is 12486.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 59074596 + 96825600 = 7686^2 + 9840^2 .

It is a super-2 number, since 2×155900196² = 48609742225676832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 155900196.

It is not an unprimeable number, because it can be changed into a prime (155900191) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73876 + ... + 75956.

Almost surely, 2^155900196 is an apocalyptic number.

155900196 is the 12486-th square number.

It is an amenable number.

155900196 is an abundant number, since it is smaller than the sum of its proper divisors (238370317).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155900196 is an equidigital number, since it uses as much as digits as its factorization.

155900196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The cubic root of 155900196 is about 538.2064362584.

Multiplying 155900196 by its sum of digits (36), we get a square (5612407056 = 74916²).

155900196 divided by its sum of digits (36) gives a square (4330561 = 2081²).

The spelling of 155900196 in words is "one hundred fifty-five million, nine hundred thousand, one hundred ninety-six".