55257175231 has 2 divisors, whose sum is σ = 55257175232. Its totient is φ = 55257175230.

The previous prime is 55257175229. The next prime is 55257175243. The reversal of 55257175231 is 13257175255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55257175231 - 2¹ = 55257175229 is a prime.

It is a super-2 number, since 2×55257175231² (a number of 22 digits) contains 22 as substring.

Together with 55257175229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55257179231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628587615 + 27628587616.

It is an arithmetic number, because the mean of its divisors is an integer number (27628587616).

Almost surely, 2^55257175231 is an apocalyptic number.

55257175231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257175231 is an equidigital number, since it uses as much as digits as its factorization.

55257175231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367500, while the sum is 43.

The spelling of 55257175231 in words is "fifty-five billion, two hundred fifty-seven million, one hundred seventy-five thousand, two hundred thirty-one".