75172056 has 64 divisors (see below), whose sum is σ = 198806400. Its totient is φ = 23620608.

The previous prime is 75172039. The next prime is 75172067. The reversal of 75172056 is 65027157.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160735 + ... + 161201.

It is an arithmetic number, because the mean of its divisors is an integer number (3106350).

Almost surely, 2^75172056 is an apocalyptic number.

75172056 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75172056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99403200).

75172056 is an abundant number, since it is smaller than the sum of its proper divisors (123634344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75172056 is a wasteful number, since it uses less digits than its factorization.

75172056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 75172056 is about 8670.1820050100. The cubic root of 75172056 is about 422.0385700317.

The spelling of 75172056 in words is "seventy-five million, one hundred seventy-two thousand, fifty-six".