172372037 has 4 divisors (see below), whose sum is σ = 172408236. Its totient is φ = 172335840.

The previous prime is 172372003. The next prime is 172372063. The reversal of 172372037 is 730273271.

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 100020001 + 72352036 = 10001^2 + 8506^2 .

It is a cyclic number.

It is not a de Polignac number, because 172372037 - 2⁶ = 172371973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172371994 and 172372012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172375037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9638 + ... + 20919.

It is an arithmetic number, because the mean of its divisors is an integer number (43102059).

Almost surely, 2^172372037 is an apocalyptic number.

It is an amenable number.

172372037 is a deficient number, since it is larger than the sum of its proper divisors (36199).

172372037 is an equidigital number, since it uses as much as digits as its factorization.

172372037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36198.

The product of its (nonzero) digits is 12348, while the sum is 32.

The square root of 172372037 is about 13129.0531646421. The cubic root of 172372037 is about 556.5304585452.

The spelling of 172372037 in words is "one hundred seventy-two million, three hundred seventy-two thousand, thirty-seven".