172044537 has 24 divisors (see below), whose sum is σ = 267340032. Its totient is φ = 98128800.

The previous prime is 172044533. The next prime is 172044553. The reversal of 172044537 is 735440271.

It is not a de Polignac number, because 172044537 - 2² = 172044533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172044498 and 172044507.

It is not an unprimeable number, because it can be changed into a prime (172044533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145087 + ... + 146267.

It is an arithmetic number, because the mean of its divisors is an integer number (11139168).

Almost surely, 2^172044537 is an apocalyptic number.

It is an amenable number.

172044537 is a deficient number, since it is larger than the sum of its proper divisors (95295495).

172044537 is a wasteful number, since it uses less digits than its factorization.

172044537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2182 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 172044537 is about 13116.5748959094. The cubic root of 172044537 is about 556.1777731916.

The spelling of 172044537 in words is "one hundred seventy-two million, forty-four thousand, five hundred thirty-seven".