72054532 has 18 divisors (see below), whose sum is σ = 138601694. Its totient is φ = 32751840.

The previous prime is 72054529. The next prime is 72054553. The reversal of 72054532 is 23545027.

It can be written as a sum of positive squares in only one way, i.e., 47114496 + 24940036 = 6864^2 + 4994^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72054532.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73953 + ... + 74920.

Almost surely, 2^72054532 is an apocalyptic number.

It is an amenable number.

72054532 is a deficient number, since it is larger than the sum of its proper divisors (66547162).

72054532 is a wasteful number, since it uses less digits than its factorization.

72054532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148899 (or 148886 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 72054532 is about 8488.4940949499. The cubic root of 72054532 is about 416.1217669307.

Adding to 72054532 its reverse (23545027), we get a palindrome (95599559).

The spelling of 72054532 in words is "seventy-two million, fifty-four thousand, five hundred thirty-two".