551138179 has 2 divisors, whose sum is σ = 551138180. Its totient is φ = 551138178.

The previous prime is 551138143. The next prime is 551138183. The reversal of 551138179 is 971831155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551138179 is a prime.

It is not a weakly prime, because it can be changed into another prime (551138279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275569089 + 275569090.

It is an arithmetic number, because the mean of its divisors is an integer number (275569090).

Almost surely, 2^551138179 is an apocalyptic number.

551138179 is a deficient number, since it is larger than the sum of its proper divisors (1).

551138179 is an equidigital number, since it uses as much as digits as its factorization.

551138179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 40.

The square root of 551138179 is about 23476.3323157601. The cubic root of 551138179 is about 819.8860534708.

The spelling of 551138179 in words is "five hundred fifty-one million, one hundred thirty-eight thousand, one hundred seventy-nine".