551251020507 has 16 divisors (see below), whose sum is σ = 801869312640. Its totient is φ = 334070841600.

The previous prime is 551251020493. The next prime is 551251020581. The reversal of 551251020507 is 705020152155.

It is not a de Polignac number, because 551251020507 - 2⁷ = 551251020379 is a prime.

It is a super-2 number, since 2×551251020507² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (551251022507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32619 + ... + 1050507.

It is an arithmetic number, because the mean of its divisors is an integer number (50116832040).

Almost surely, 2^551251020507 is an apocalyptic number.

551251020507 is a deficient number, since it is larger than the sum of its proper divisors (250618292133).

551251020507 is a wasteful number, since it uses less digits than its factorization.

551251020507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034314.

The product of its (nonzero) digits is 17500, while the sum is 33.

The spelling of 551251020507 in words is "five hundred fifty-one billion, two hundred fifty-one million, twenty thousand, five hundred seven".