55875613 has 2 divisors, whose sum is σ = 55875614. Its totient is φ = 55875612.

The previous prime is 55875601. The next prime is 55875629. The reversal of 55875613 is 31657855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40170244 + 15705369 = 6338^2 + 3963^2 .

It is a cyclic number.

It is not a de Polignac number, because 55875613 - 2⁹ = 55875101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55875643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27937806 + 27937807.

It is an arithmetic number, because the mean of its divisors is an integer number (27937807).

Almost surely, 2^55875613 is an apocalyptic number.

It is an amenable number.

55875613 is a deficient number, since it is larger than the sum of its proper divisors (1).

55875613 is an equidigital number, since it uses as much as digits as its factorization.

55875613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 40.

The square root of 55875613 is about 7474.9991973244. Note that the first 3 decimals coincide. The cubic root of 55875613 is about 382.3027601711.

The spelling of 55875613 in words is "fifty-five million, eight hundred seventy-five thousand, six hundred thirteen".