551115031 has 2 divisors, whose sum is σ = 551115032. Its totient is φ = 551115030.

The previous prime is 551115023. The next prime is 551115067. The reversal of 551115031 is 130511155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 551115031 - 2³ = 551115023 is a prime.

It is a super-2 number, since 2×551115031² = 607455554788261922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551114993 and 551115011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (551115001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275557515 + 275557516.

It is an arithmetic number, because the mean of its divisors is an integer number (275557516).

Almost surely, 2^551115031 is an apocalyptic number.

551115031 is a deficient number, since it is larger than the sum of its proper divisors (1).

551115031 is an equidigital number, since it uses as much as digits as its factorization.

551115031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 551115031 is about 23475.8393034200. The cubic root of 551115031 is about 819.8745748079.

Adding to 551115031 its reverse (130511155), we get a palindrome (681626186).

The spelling of 551115031 in words is "five hundred fifty-one million, one hundred fifteen thousand, thirty-one".