551497678251 has 64 divisors (see below), whose sum is σ = 836927078400. Its totient is φ = 320663476224.

The previous prime is 551497678231. The next prime is 551497678289. The reversal of 551497678251 is 152876794155.

It is a happy number.

It is not a de Polignac number, because 551497678251 - 2²³ = 551489289643 is a prime.

It is a super-3 number, since 3×551497678251³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (551497678211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10069126 + ... + 10123748.

It is an arithmetic number, because the mean of its divisors is an integer number (13076985600).

Almost surely, 2^551497678251 is an apocalyptic number.

551497678251 is a deficient number, since it is larger than the sum of its proper divisors (285429400149).

551497678251 is a wasteful number, since it uses less digits than its factorization.

551497678251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54860.

The product of its digits is 21168000, while the sum is 60.

The spelling of 551497678251 in words is "five hundred fifty-one billion, four hundred ninety-seven million, six hundred seventy-eight thousand, two hundred fifty-one".