557551139 has 2 divisors, whose sum is σ = 557551140. Its totient is φ = 557551138.

The previous prime is 557551079. The next prime is 557551157. The reversal of 557551139 is 931155755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 557551139 - 2¹⁶ = 557485603 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 557551096 and 557551105.

It is not a weakly prime, because it can be changed into another prime (557551339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278775569 + 278775570.

It is an arithmetic number, because the mean of its divisors is an integer number (278775570).

Almost surely, 2^557551139 is an apocalyptic number.

557551139 is a deficient number, since it is larger than the sum of its proper divisors (1).

557551139 is an equidigital number, since it uses as much as digits as its factorization.

557551139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 118125, while the sum is 41.

The square root of 557551139 is about 23612.5208099432. The cubic root of 557551139 is about 823.0538216277.

The spelling of 557551139 in words is "five hundred fifty-seven million, five hundred fifty-one thousand, one hundred thirty-nine".