72543552 has 28 divisors (see below), whose sum is σ = 191938656. Its totient is φ = 24181120.

The previous prime is 72543511. The next prime is 72543563. The reversal of 72543552 is 25534527.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188724 + ... + 189107.

It is an arithmetic number, because the mean of its divisors is an integer number (6854952).

Almost surely, 2^72543552 is an apocalyptic number.

It is an amenable number.

72543552 is an abundant number, since it is smaller than the sum of its proper divisors (119395104).

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

72543552 is a wasteful number, since it uses less digits than its factorization.

72543552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377846 (or 377836 counting only the distinct ones).

The product of its digits is 42000, while the sum is 33.

The square root of 72543552 is about 8517.2502605007. The cubic root of 72543552 is about 417.0610242570.

The spelling of 72543552 in words is "seventy-two million, five hundred forty-three thousand, five hundred fifty-two".