55000555031 has 2 divisors, whose sum is σ = 55000555032. Its totient is φ = 55000555030.

The previous prime is 55000555021. The next prime is 55000555081. The reversal of 55000555031 is 13055500055.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55000555031 is a prime.

It is a super-2 number, since 2×55000555031² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55000554985 and 55000555003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55000555021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27500277515 + 27500277516.

It is an arithmetic number, because the mean of its divisors is an integer number (27500277516).

Almost surely, 2^55000555031 is an apocalyptic number.

55000555031 is a deficient number, since it is larger than the sum of its proper divisors (1).

55000555031 is an equidigital number, since it uses as much as digits as its factorization.

55000555031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9375, while the sum is 29.

The spelling of 55000555031 in words is "fifty-five billion, five hundred fifty-five thousand, thirty-one".