55439500757231 has 2 divisors, whose sum is σ = 55439500757232. Its totient is φ = 55439500757230.

The previous prime is 55439500757183. The next prime is 55439500757257. The reversal of 55439500757231 is 13275700593455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55439500757231 - 2³⁸ = 55164622850287 is a prime.

It is a super-2 number, since 2×55439500757231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55439500717231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27719750378615 + 27719750378616.

It is an arithmetic number, because the mean of its divisors is an integer number (27719750378616).

Almost surely, 2^{55439500757231} is an apocalyptic number.

55439500757231 is a deficient number, since it is larger than the sum of its proper divisors (1).

55439500757231 is an equidigital number, since it uses as much as digits as its factorization.

55439500757231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19845000, while the sum is 56.

The spelling of 55439500757231 in words is "fifty-five trillion, four hundred thirty-nine billion, five hundred million, seven hundred fifty-seven thousand, two hundred thirty-one".