551272720 has 40 divisors (see below), whose sum is σ = 1297166976. Its totient is φ = 217849728.

The previous prime is 551272703. The next prime is 551272723. The reversal of 551272720 is 27272155.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×551272720² = 607803223632396800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551272723) 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 7 ways as a sum of consecutive naturals, for example, 34872 + ... + 48151.

Almost surely, 2^551272720 is an apocalyptic number.

It is an amenable number.

551272720 is an abundant number, since it is smaller than the sum of its proper divisors (745894256).

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

551272720 is a wasteful number, since it uses less digits than its factorization.

551272720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83119 (or 83113 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 551272720 is about 23479.1976012810. The cubic root of 551272720 is about 819.9527634896.

The spelling of 551272720 in words is "five hundred fifty-one million, two hundred seventy-two thousand, seven hundred twenty".