55174695391 has 2 divisors, whose sum is σ = 55174695392. Its totient is φ = 55174695390.

The previous prime is 55174695353. The next prime is 55174695397. The reversal of 55174695391 is 19359647155.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55174695391 is a prime.

It is a super-2 number, since 2×55174695391² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55174695397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27587347695 + 27587347696.

It is an arithmetic number, because the mean of its divisors is an integer number (27587347696).

Almost surely, 2^55174695391 is an apocalyptic number.

55174695391 is a deficient number, since it is larger than the sum of its proper divisors (1).

55174695391 is an equidigital number, since it uses as much as digits as its factorization.

55174695391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103000, while the sum is 55.

The spelling of 55174695391 in words is "fifty-five billion, one hundred seventy-four million, six hundred ninety-five thousand, three hundred ninety-one".