55245577 has 2 divisors, whose sum is σ = 55245578. Its totient is φ = 55245576.

The previous prime is 55245511. The next prime is 55245581. The reversal of 55245577 is 77554255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54331641 + 913936 = 7371^2 + 956^2 .

It is a cyclic number.

It is not a de Polignac number, because 55245577 - 2¹⁵ = 55212809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55245877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27622788 + 27622789.

It is an arithmetic number, because the mean of its divisors is an integer number (27622789).

Almost surely, 2^55245577 is an apocalyptic number.

It is an amenable number.

55245577 is a deficient number, since it is larger than the sum of its proper divisors (1).

55245577 is an equidigital number, since it uses as much as digits as its factorization.

55245577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 245000, while the sum is 40.

The square root of 55245577 is about 7432.7368445277. The cubic root of 55245577 is about 380.8604164411.

The spelling of 55245577 in words is "fifty-five million, two hundred forty-five thousand, five hundred seventy-seven".