72501579 has 24 divisors (see below), whose sum is σ = 107557632. Its totient is φ = 47045040.

The previous prime is 72501577. The next prime is 72501599. The reversal of 72501579 is 97510527.

It is not a de Polignac number, because 72501579 - 2¹ = 72501577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72501577) 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 in 23 ways as a sum of consecutive naturals, for example, 52354 + ... + 53720.

It is an arithmetic number, because the mean of its divisors is an integer number (4481568).

Almost surely, 2^72501579 is an apocalyptic number.

72501579 is a deficient number, since it is larger than the sum of its proper divisors (35056053).

72501579 is a wasteful number, since it uses less digits than its factorization.

72501579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1527 (or 1524 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 72501579 is about 8514.7859045310. The cubic root of 72501579 is about 416.9805729093.

The spelling of 72501579 in words is "seventy-two million, five hundred one thousand, five hundred seventy-nine".