55426913 has 2 divisors, whose sum is σ = 55426914. Its totient is φ = 55426912.

The previous prime is 55426907. The next prime is 55426937. The reversal of 55426913 is 31962455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40742689 + 14684224 = 6383^2 + 3832^2 .

It is a cyclic number.

It is not a de Polignac number, because 55426913 - 2⁴ = 55426897 is a prime.

It is not a weakly prime, because it can be changed into another prime (55426213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27713456 + 27713457.

It is an arithmetic number, because the mean of its divisors is an integer number (27713457).

Almost surely, 2^55426913 is an apocalyptic number.

It is an amenable number.

55426913 is a deficient number, since it is larger than the sum of its proper divisors (1).

55426913 is an equidigital number, since it uses as much as digits as its factorization.

55426913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 35.

The square root of 55426913 is about 7444.9253186315. The cubic root of 55426913 is about 381.2766686352.

The spelling of 55426913 in words is "fifty-five million, four hundred twenty-six thousand, nine hundred thirteen".