551320131 has 32 divisors (see below), whose sum is σ = 814176000. Its totient is φ = 330438528.

The previous prime is 551320127. The next prime is 551320141. The reversal of 551320131 is 131023155.

It is not a de Polignac number, because 551320131 - 2² = 551320127 is a prime.

It is a super-2 number, since 2×551320131² = 607907773691714322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551320098 and 551320107.

It is not an unprimeable number, because it can be changed into a prime (551320111) 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, 94701 + ... + 100353.

It is an arithmetic number, because the mean of its divisors is an integer number (25443000).

Almost surely, 2^551320131 is an apocalyptic number.

551320131 is a deficient number, since it is larger than the sum of its proper divisors (262855869).

551320131 is a wasteful number, since it uses less digits than its factorization.

551320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5763.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 551320131 is about 23480.2072179953. The cubic root of 551320131 is about 819.9762688948.

Adding to 551320131 its reverse (131023155), we get a palindrome (682343286).

The spelling of 551320131 in words is "five hundred fifty-one million, three hundred twenty thousand, one hundred thirty-one".