55550550031 has 2 divisors, whose sum is σ = 55550550032. Its totient is φ = 55550550030.

The previous prime is 55550549993. The next prime is 55550550071. The reversal of 55550550031 is 13005505555.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55550550031 is a prime.

It is a super-2 number, since 2×55550550031² (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 (55550550071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775275015 + 27775275016.

It is an arithmetic number, because the mean of its divisors is an integer number (27775275016).

Almost surely, 2^55550550031 is an apocalyptic number.

55550550031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55550550031 is an equidigital number, since it uses as much as digits as its factorization.

55550550031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46875, while the sum is 34.

The spelling of 55550550031 in words is "fifty-five billion, five hundred fifty million, five hundred fifty thousand, thirty-one".