551351131 has 2 divisors, whose sum is σ = 551351132. Its totient is φ = 551351130.

The previous prime is 551351113. The next prime is 551351137. The reversal of 551351131 is 131153155.

It is a happy number.

Together with previous prime (551351113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 551351131 - 2²¹ = 549253979 is a prime.

It is a super-2 number, since 2×551351131² = 607976139309958322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 551351096 and 551351105.

It is not a weakly prime, because it can be changed into another prime (551351137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275675565 + 275675566.

It is an arithmetic number, because the mean of its divisors is an integer number (275675566).

Almost surely, 2^551351131 is an apocalyptic number.

551351131 is a deficient number, since it is larger than the sum of its proper divisors (1).

551351131 is an equidigital number, since it uses as much as digits as its factorization.

551351131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1125, while the sum is 25.

The square root of 551351131 is about 23480.8673391764. The cubic root of 551351131 is about 819.9916373329.

It can be divided in two parts, 5513 and 51131, that added together give a square (56644 = 238²).

The spelling of 551351131 in words is "five hundred fifty-one million, three hundred fifty-one thousand, one hundred thirty-one".