551505051 has 32 divisors (see below), whose sum is σ = 826675200. Its totient is φ = 363368160.

The previous prime is 551505049. The next prime is 551505113. The reversal of 551505051 is 150505155.

551505051 is a `hidden beast` number, since 5 + 5 + 150 + 505 + 1 = 666.

It is not a de Polignac number, because 551505051 - 2¹ = 551505049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (551500051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1180720 + ... + 1181186.

It is an arithmetic number, because the mean of its divisors is an integer number (25833600).

Almost surely, 2^551505051 is an apocalyptic number.

551505051 is a deficient number, since it is larger than the sum of its proper divisors (275170149).

551505051 is a wasteful number, since it uses less digits than its factorization.

551505051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The square root of 551505051 is about 23484.1446725232. The cubic root of 551505051 is about 820.0679355771.

The spelling of 551505051 in words is "five hundred fifty-one million, five hundred five thousand, fifty-one".