72566526 has 48 divisors (see below), whose sum is σ = 153142704. Its totient is φ = 22917888.

The previous prime is 72566467. The next prime is 72566537. The reversal of 72566526 is 62566527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 368260 + ... + 368456.

It is an arithmetic number, because the mean of its divisors is an integer number (3190473).

Almost surely, 2^72566526 is an apocalyptic number.

72566526 is an abundant number, since it is smaller than the sum of its proper divisors (80576178).

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

72566526 is a wasteful number, since it uses less digits than its factorization.

72566526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 304 counting only the distinct ones).

The product of its digits is 151200, while the sum is 39.

The square root of 72566526 is about 8518.5988284459. The cubic root of 72566526 is about 417.1050463119.

Subtracting from 72566526 its reverse (62566527), we obtain a palindrome (9999999).

The spelling of 72566526 in words is "seventy-two million, five hundred sixty-six thousand, five hundred twenty-six".