101597945 has 4 divisors (see below), whose sum is σ = 121917540. Its totient is φ = 81278352.

The previous prime is 101597939. The next prime is 101597953. The reversal of 101597945 is 549795101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13388281 + 88209664 = 3659^2 + 9392^2 .

It is a cyclic number.

It is not a de Polignac number, because 101597945 - 2¹⁴ = 101581561 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10159790 + ... + 10159799.

It is an arithmetic number, because the mean of its divisors is an integer number (30479385).

Almost surely, 2^101597945 is an apocalyptic number.

It is an amenable number.

101597945 is a deficient number, since it is larger than the sum of its proper divisors (20319595).

101597945 is an equidigital number, since it uses as much as digits as its factorization.

101597945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20319594.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 101597945 is about 10079.5805964336. The cubic root of 101597945 is about 466.6181647438.

The spelling of 101597945 in words is "one hundred one million, five hundred ninety-seven thousand, nine hundred forty-five".