55240802431 has 2 divisors, whose sum is σ = 55240802432. Its totient is φ = 55240802430.

The previous prime is 55240802429. The next prime is 55240802447. The reversal of 55240802431 is 13420804255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55240802431 - 2¹ = 55240802429 is a prime.

It is a super-2 number, since 2×55240802431² (a number of 22 digits) contains 22 as substring.

Together with 55240802429, 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 (55240802411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27620401215 + 27620401216.

It is an arithmetic number, because the mean of its divisors is an integer number (27620401216).

Almost surely, 2^55240802431 is an apocalyptic number.

55240802431 is a deficient number, since it is larger than the sum of its proper divisors (1).

55240802431 is an equidigital number, since it uses as much as digits as its factorization.

55240802431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 55240802431 in words is "fifty-five billion, two hundred forty million, eight hundred two thousand, four hundred thirty-one".