72550542 has 16 divisors (see below), whose sum is σ = 146161872. Its totient is φ = 24006720.

The previous prime is 72550537. The next prime is 72550561. The reversal of 72550542 is 24505527.

It is a super-2 number, since 2×72550542² = 10527162288987528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43309 + ... + 44952.

It is an arithmetic number, because the mean of its divisors is an integer number (9135117).

Almost surely, 2^72550542 is an apocalyptic number.

72550542 is an abundant number, since it is smaller than the sum of its proper divisors (73611330).

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

72550542 is a wasteful number, since it uses less digits than its factorization.

72550542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88403.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 72550542 is about 8517.6605943181. The cubic root of 72550542 is about 417.0744192584.

The spelling of 72550542 in words is "seventy-two million, five hundred fifty thousand, five hundred forty-two".