155442653 has 8 divisors (see below), whose sum is σ = 156823128. Its totient is φ = 154068544.

The previous prime is 155442641. The next prime is 155442659. The reversal of 155442653 is 356244551.

It can be written as a sum of positive squares in 4 ways, for example, as 102050404 + 53392249 = 10102^2 + 7307^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155442653 - 2⁶ = 155442589 is a prime.

It is a super-3 number, since 3×155442653³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155442659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56375 + ... + 59067.

It is an arithmetic number, because the mean of its divisors is an integer number (19602891).

Almost surely, 2^155442653 is an apocalyptic number.

It is an amenable number.

155442653 is a deficient number, since it is larger than the sum of its proper divisors (1380475).

155442653 is a wasteful number, since it uses less digits than its factorization.

155442653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3183.

The product of its digits is 72000, while the sum is 35.

The square root of 155442653 is about 12467.6642960901. The cubic root of 155442653 is about 537.6794027421.

The spelling of 155442653 in words is "one hundred fifty-five million, four hundred forty-two thousand, six hundred fifty-three".