172330977 has 16 divisors (see below), whose sum is σ = 282800000. Its totient is φ = 90899712.

The previous prime is 172330937. The next prime is 172330979. The reversal of 172330977 is 779033271.

172330977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172330977 - 2⁸ = 172330721 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (172330979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315352 + ... + 315897.

It is an arithmetic number, because the mean of its divisors is an integer number (17675000).

Almost surely, 2^172330977 is an apocalyptic number.

It is an amenable number.

172330977 is a deficient number, since it is larger than the sum of its proper divisors (110469023).

172330977 is a wasteful number, since it uses less digits than its factorization.

172330977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631272.

The product of its (nonzero) digits is 55566, while the sum is 39.

The square root of 172330977 is about 13127.4893639264. The cubic root of 172330977 is about 556.4862654620.

The spelling of 172330977 in words is "one hundred seventy-two million, three hundred thirty thousand, nine hundred seventy-seven".