55731403139 has 2 divisors, whose sum is σ = 55731403140. Its totient is φ = 55731403138.

The previous prime is 55731403111. The next prime is 55731403223. The reversal of 55731403139 is 93130413755.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55731403139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55731403096 and 55731403105.

It is not a weakly prime, because it can be changed into another prime (55731403939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27865701569 + 27865701570.

It is an arithmetic number, because the mean of its divisors is an integer number (27865701570).

Almost surely, 2^55731403139 is an apocalyptic number.

55731403139 is a deficient number, since it is larger than the sum of its proper divisors (1).

55731403139 is an equidigital number, since it uses as much as digits as its factorization.

55731403139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 41.

The spelling of 55731403139 in words is "fifty-five billion, seven hundred thirty-one million, four hundred three thousand, one hundred thirty-nine".