72552556 has 12 divisors (see below), whose sum is σ = 127039360. Its totient is φ = 36255600.

The previous prime is 72552553. The next prime is 72552569. The reversal of 72552556 is 65525527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72552551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4906 + ... + 13006.

Almost surely, 2^72552556 is an apocalyptic number.

It is an amenable number.

72552556 is a deficient number, since it is larger than the sum of its proper divisors (54486804).

72552556 is a wasteful number, since it uses less digits than its factorization.

72552556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344 (or 10342 counting only the distinct ones).

The product of its digits is 105000, while the sum is 37.

The square root of 72552556 is about 8517.7788184479. The cubic root of 72552556 is about 417.0782785455.

The spelling of 72552556 in words is "seventy-two million, five hundred fifty-two thousand, five hundred fifty-six".