75515972 has 24 divisors (see below), whose sum is σ = 159917184. Its totient is φ = 30460032.

The previous prime is 75515953. The next prime is 75515977. The reversal of 75515972 is 27951557.

It is not an unprimeable number, because it can be changed into a prime (75515977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78848 + ... + 79799.

It is an arithmetic number, because the mean of its divisors is an integer number (6663216).

Almost surely, 2^75515972 is an apocalyptic number.

It is an amenable number.

75515972 is an abundant number, since it is smaller than the sum of its proper divisors (84401212).

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

75515972 is a wasteful number, since it uses less digits than its factorization.

75515972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158675 (or 158673 counting only the distinct ones).

The product of its digits is 110250, while the sum is 41.

The square root of 75515972 is about 8689.9926352098. The cubic root of 75515972 is about 422.6812070062.

The spelling of 75515972 in words is "seventy-five million, five hundred fifteen thousand, nine hundred seventy-two".