551505262100 has 72 divisors (see below), whose sum is σ = 1289083248600. Its totient is φ = 203591969280.

The previous prime is 551505262069. The next prime is 551505262127. The reversal of 551505262100 is 1262505155.

It can be written as a sum of positive squares in 12 ways, for example, as 59413264 + 551445848836 = 7708^2 + 742594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6893126 + ... + 6972674.

Almost surely, 2^551505262100 is an apocalyptic number.

551505262100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

551505262100 is an abundant number, since it is smaller than the sum of its proper divisors (737577986500).

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

551505262100 is a wasteful number, since it uses less digits than its factorization.

551505262100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84909 (or 84902 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

Adding to 551505262100 its reverse (1262505155), we get a palindrome (552767767255).

The spelling of 551505262100 in words is "five hundred fifty-one billion, five hundred five million, two hundred sixty-two thousand, one hundred".