55500555001 has 2 divisors, whose sum is σ = 55500555002. Its totient is φ = 55500555000.

The previous prime is 55500554987. The next prime is 55500555023. The reversal of 55500555001 is 10055500555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53557067776 + 1943487225 = 231424^2 + 44085^2 .

It is a cyclic number.

It is not a de Polignac number, because 55500555001 - 2⁵ = 55500554969 is a prime.

It is a super-2 number, since 2×55500555001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55500555041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27750277500 + 27750277501.

It is an arithmetic number, because the mean of its divisors is an integer number (27750277501).

Almost surely, 2^55500555001 is an apocalyptic number.

It is an amenable number.

55500555001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55500555001 is an equidigital number, since it uses as much as digits as its factorization.

55500555001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15625, while the sum is 31.

The spelling of 55500555001 in words is "fifty-five billion, five hundred million, five hundred fifty-five thousand, one".