75216456 has 48 divisors (see below), whose sum is σ = 232814400. Its totient is φ = 21490272.

The previous prime is 75216451. The next prime is 75216469. The reversal of 75216456 is 65461257.

It is a happy number.

75216456 is a `hidden beast` number, since 7 + 5 + 2 + 1 + 645 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 75216456.

It is not an unprimeable number, because it can be changed into a prime (75216451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74116 + ... + 75123.

It is an arithmetic number, because the mean of its divisors is an integer number (4850300).

Almost surely, 2^75216456 is an apocalyptic number.

It is an amenable number.

75216456 is an abundant number, since it is smaller than the sum of its proper divisors (157597944).

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

75216456 is a wasteful number, since it uses less digits than its factorization.

75216456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149258 (or 149251 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 75216456 is about 8672.7421269170. The cubic root of 75216456 is about 422.1216453368.

The spelling of 75216456 in words is "seventy-five million, two hundred sixteen thousand, four hundred fifty-six".