72552775 has 6 divisors (see below), whose sum is σ = 89965472. Its totient is φ = 58042200.

The previous prime is 72552761. The next prime is 72552791. The reversal of 72552775 is 57725527.

It is a happy number.

It is not a de Polignac number, because 72552775 - 2²⁵ = 38998343 is a prime.

It is a Duffinian number.

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 5 ways as a sum of consecutive naturals, for example, 1451031 + ... + 1451080.

Almost surely, 2^72552775 is an apocalyptic number.

72552775 is a deficient number, since it is larger than the sum of its proper divisors (17412697).

72552775 is a wasteful number, since it uses less digits than its factorization.

72552775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2902121 (or 2902116 counting only the distinct ones).

The product of its digits is 171500, while the sum is 40.

The square root of 72552775 is about 8517.7916739023. The cubic root of 72552775 is about 417.0786981955.

The spelling of 72552775 in words is "seventy-two million, five hundred fifty-two thousand, seven hundred seventy-five".