55345521001 has 2 divisors, whose sum is σ = 55345521002. Its totient is φ = 55345521000.

The previous prime is 55345520987. The next prime is 55345521013. The reversal of 55345521001 is 10012554355.

55345521001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34767331600 + 20578189401 = 186460^2 + 143451^2 .

It is a cyclic number.

It is not a de Polignac number, because 55345521001 - 2²³ = 55337132393 is a prime.

It is not a weakly prime, because it can be changed into another prime (55345521901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27672760500 + 27672760501.

It is an arithmetic number, because the mean of its divisors is an integer number (27672760501).

Almost surely, 2^55345521001 is an apocalyptic number.

It is an amenable number.

55345521001 is a deficient number, since it is larger than the sum of its proper divisors (1).

55345521001 is an equidigital number, since it uses as much as digits as its factorization.

55345521001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 55345521001 in words is "fifty-five billion, three hundred forty-five million, five hundred twenty-one thousand, one".