55625413 has 2 divisors, whose sum is σ = 55625414. Its totient is φ = 55625412.

The previous prime is 55625399. The next prime is 55625417. The reversal of 55625413 is 31452655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51811204 + 3814209 = 7198^2 + 1953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55625413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55625417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27812706 + 27812707.

It is an arithmetic number, because the mean of its divisors is an integer number (27812707).

Almost surely, 2^55625413 is an apocalyptic number.

It is an amenable number.

55625413 is a deficient number, since it is larger than the sum of its proper divisors (1).

55625413 is an equidigital number, since it uses as much as digits as its factorization.

55625413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 31.

The square root of 55625413 is about 7458.2446326197. The cubic root of 55625413 is about 381.7312808191.

The spelling of 55625413 in words is "fifty-five million, six hundred twenty-five thousand, four hundred thirteen".