72256550 has 24 divisors (see below), whose sum is σ = 134757000. Its totient is φ = 28825280.

The previous prime is 72256537. The next prime is 72256559. The reversal of 72256550 is 5565227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256559) 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 11 ways as a sum of consecutive naturals, for example, 19226 + ... + 22674.

It is an arithmetic number, because the mean of its divisors is an integer number (5614875).

Almost surely, 2^72256550 is an apocalyptic number.

72256550 is a deficient number, since it is larger than the sum of its proper divisors (62500450).

72256550 is a wasteful number, since it uses less digits than its factorization.

72256550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 72256550 is about 8500.3852853856. The cubic root of 72256550 is about 416.5102951002.

The spelling of 72256550 in words is "seventy-two million, two hundred fifty-six thousand, five hundred fifty".