72551276 has 24 divisors (see below), whose sum is σ = 147843360. Its totient is φ = 30506112.

The previous prime is 72551273. The next prime is 72551293. The reversal of 72551276 is 67215527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72551273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22961 + ... + 25928.

It is an arithmetic number, because the mean of its divisors is an integer number (6160140).

Almost surely, 2^72551276 is an apocalyptic number.

It is an amenable number.

72551276 is an abundant number, since it is smaller than the sum of its proper divisors (75292084).

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

72551276 is a wasteful number, since it uses less digits than its factorization.

72551276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48953 (or 48951 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 72551276 is about 8517.7036811573. The cubic root of 72551276 is about 417.0758257794.

It can be divided in two parts, 72551 and 276, that added together give a palindrome (72827).

The spelling of 72551276 in words is "seventy-two million, five hundred fifty-one thousand, two hundred seventy-six".