172545374 has 4 divisors (see below), whose sum is σ = 258818064. Its totient is φ = 86272686.

The previous prime is 172545353. The next prime is 172545391. The reversal of 172545374 is 473545271.

172545374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43136342 + ... + 43136345.

It is an arithmetic number, because the mean of its divisors is an integer number (64704516).

Almost surely, 2^172545374 is an apocalyptic number.

172545374 is a deficient number, since it is larger than the sum of its proper divisors (86272690).

172545374 is an equidigital number, since it uses as much as digits as its factorization.

172545374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86272689.

The product of its digits is 117600, while the sum is 38.

The square root of 172545374 is about 13135.6527816474. The cubic root of 172545374 is about 556.7169447139.

The spelling of 172545374 in words is "one hundred seventy-two million, five hundred forty-five thousand, three hundred seventy-four".