55574977 has 2 divisors, whose sum is σ = 55574978. Its totient is φ = 55574976.

The previous prime is 55574941. The next prime is 55574983. The reversal of 55574977 is 77947555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 355216 = 7431^2 + 596^2 .

It is a cyclic number.

It is not a de Polignac number, because 55574977 - 2¹⁹ = 55050689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55574977.

It is not a weakly prime, because it can be changed into another prime (55574917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27787488 + 27787489.

It is an arithmetic number, because the mean of its divisors is an integer number (27787489).

Almost surely, 2^55574977 is an apocalyptic number.

It is an amenable number.

55574977 is a deficient number, since it is larger than the sum of its proper divisors (1).

55574977 is an equidigital number, since it uses as much as digits as its factorization.

55574977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1543500, while the sum is 49.

The square root of 55574977 is about 7454.8626412564. The cubic root of 55574977 is about 381.6158730123.

The spelling of 55574977 in words is "fifty-five million, five hundred seventy-four thousand, nine hundred seventy-seven".