55364557 has 2 divisors, whose sum is σ = 55364558. Its totient is φ = 55364556.

The previous prime is 55364527. The next prime is 55364581. The reversal of 55364557 is 75546355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41332041 + 14032516 = 6429^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 55364557 - 2¹⁵ = 55331789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55364527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27682278 + 27682279.

It is an arithmetic number, because the mean of its divisors is an integer number (27682279).

Almost surely, 2^55364557 is an apocalyptic number.

It is an amenable number.

55364557 is a deficient number, since it is larger than the sum of its proper divisors (1).

55364557 is an equidigital number, since it uses as much as digits as its factorization.

55364557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 315000, while the sum is 40.

The square root of 55364557 is about 7440.7363210908. The cubic root of 55364557 is about 381.1336345752.

The spelling of 55364557 in words is "fifty-five million, three hundred sixty-four thousand, five hundred fifty-seven".