55123080401 has 2 divisors, whose sum is σ = 55123080402. Its totient is φ = 55123080400.

The previous prime is 55123080377. The next prime is 55123080437. The reversal of 55123080401 is 10408032155.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51401958400 + 3721122001 = 226720^2 + 61001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55123080401 is a prime.

It is a super-2 number, since 2×55123080401² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55123080451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27561540200 + 27561540201.

It is an arithmetic number, because the mean of its divisors is an integer number (27561540201).

Almost surely, 2^55123080401 is an apocalyptic number.

It is an amenable number.

55123080401 is a deficient number, since it is larger than the sum of its proper divisors (1).

55123080401 is an equidigital number, since it uses as much as digits as its factorization.

55123080401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 55123080401 in words is "fifty-five billion, one hundred twenty-three million, eighty thousand, four hundred one".