345972537 has 6 divisors (see below), whose sum is σ = 499738122. Its totient is φ = 230648352.

The previous prime is 345972503. The next prime is 345972547. The reversal of 345972537 is 735279543.

345972537 is a `hidden beast` number, since 3 + 4 + 597 + 2 + 53 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 289136016 + 56836521 = 17004^2 + 7539^2 .

It is not a de Polignac number, because 345972537 - 2¹¹ = 345970489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 345972492 and 345972501.

It is not an unprimeable number, because it can be changed into a prime (345972547) 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 5 ways as a sum of consecutive naturals, for example, 19220688 + ... + 19220705.

It is an arithmetic number, because the mean of its divisors is an integer number (83289687).

Almost surely, 2^345972537 is an apocalyptic number.

It is an amenable number.

345972537 is a deficient number, since it is larger than the sum of its proper divisors (153765585).

345972537 is a wasteful number, since it uses less digits than its factorization.

345972537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38441399 (or 38441396 counting only the distinct ones).

The product of its digits is 793800, while the sum is 45.

The square root of 345972537 is about 18600.3370130759. The cubic root of 345972537 is about 702.0163205108.

The spelling of 345972537 in words is "three hundred forty-five million, nine hundred seventy-two thousand, five hundred thirty-seven".