72553574 has 4 divisors (see below), whose sum is σ = 108830364. Its totient is φ = 36276786.

The previous prime is 72553573. The next prime is 72553589. The reversal of 72553574 is 47535527.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×72553574² = 10528042200346952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72553573) by changing a digit.

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 as a sum of consecutive naturals, namely, 18138392 + ... + 18138395.

It is an arithmetic number, because the mean of its divisors is an integer number (27207591).

Almost surely, 2^72553574 is an apocalyptic number.

72553574 is a deficient number, since it is larger than the sum of its proper divisors (36276790).

72553574 is a wasteful number, since it uses less digits than its factorization.

72553574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36276789.

The product of its digits is 147000, while the sum is 38.

The square root of 72553574 is about 8517.8385756012. The cubic root of 72553574 is about 417.0802292404.

The spelling of 72553574 in words is "seventy-two million, five hundred fifty-three thousand, five hundred seventy-four".