72072552 has 64 divisors (see below), whose sum is σ = 184726080. Its totient is φ = 23427072.

The previous prime is 72072541. The next prime is 72072563. The reversal of 72072552 is 25527027.

It is an interprime number because it is at equal distance from previous prime (72072541) and next prime (72072563).

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, 193038 + ... + 193410.

It is an arithmetic number, because the mean of its divisors is an integer number (2886345).

Almost surely, 2^72072552 is an apocalyptic number.

It is an amenable number.

72072552 is an abundant number, since it is smaller than the sum of its proper divisors (112653528).

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

72072552 is a wasteful number, since it uses less digits than its factorization.

72072552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 72072552 is about 8489.5554653939. Note that the first 3 decimals coincide. The cubic root of 72072552 is about 416.1564531099.

Adding to 72072552 its reverse (25527027), we get a palindrome (97599579).

The spelling of 72072552 in words is "seventy-two million, seventy-two thousand, five hundred fifty-two".