55425977 has 2 divisors, whose sum is σ = 55425978. Its totient is φ = 55425976.

The previous prime is 55425947. The next prime is 55426009. The reversal of 55425977 is 77952455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28686736 + 26739241 = 5356^2 + 5171^2 .

It is a cyclic number.

It is not a de Polignac number, because 55425977 - 2¹⁴ = 55409593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55425947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27712988 + 27712989.

It is an arithmetic number, because the mean of its divisors is an integer number (27712989).

Almost surely, 2^55425977 is an apocalyptic number.

It is an amenable number.

55425977 is a deficient number, since it is larger than the sum of its proper divisors (1).

55425977 is an equidigital number, since it uses as much as digits as its factorization.

55425977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 441000, while the sum is 44.

The square root of 55425977 is about 7444.8624567550. The cubic root of 55425977 is about 381.2745224037.

The spelling of 55425977 in words is "fifty-five million, four hundred twenty-five thousand, nine hundred seventy-seven".