551505156 has 24 divisors (see below), whose sum is σ = 1290542400. Its totient is φ = 183306912.

The previous prime is 551505137. The next prime is 551505161. The reversal of 551505156 is 651505155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61656 + ... + 70031.

It is an arithmetic number, because the mean of its divisors is an integer number (53772600).

Almost surely, 2^551505156 is an apocalyptic number.

It is an amenable number.

551505156 is an abundant number, since it is smaller than the sum of its proper divisors (739037244).

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

551505156 is a wasteful number, since it uses less digits than its factorization.

551505156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132043 (or 132041 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The square root of 551505156 is about 23484.1469080740. The cubic root of 551505156 is about 820.0679876209.

Subtracting 551505156 from its reverse (651505155), we obtain a palindrome (99999999).

It can be divided in two parts, 55150 and 5156, that added together give a palindrome (60306).

The spelling of 551505156 in words is "five hundred fifty-one million, five hundred five thousand, one hundred fifty-six".