72550 has 12 divisors (see below), whose sum is σ = 135036. Its totient is φ = 29000.

The previous prime is 72547. The next prime is 72551. The reversal of 72550 is 5527.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 676 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (11253).

2⁷²⁵⁵⁰ is an apocalyptic number.

72550 is a deficient number, since it is larger than the sum of its proper divisors (62486).

72550 is a wasteful number, since it uses less digits than its factorization.

72550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463 (or 1458 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 72550 is about 269.3510720231. The cubic root of 72550 is about 41.7073380650.

Adding to 72550 its product of nonzero digits (350), we get a square (72900 = 270²).

The spelling of 72550 in words is "seventy-two thousand, five hundred fifty".