55705567 has 2 divisors, whose sum is σ = 55705568. Its totient is φ = 55705566.

The previous prime is 55705553. The next prime is 55705571. The reversal of 55705567 is 76550755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55705567 - 2²³ = 47316959 is a prime.

It is a super-2 number, since 2×55705567² = 6206220389582978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55705537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27852783 + 27852784.

It is an arithmetic number, because the mean of its divisors is an integer number (27852784).

Almost surely, 2^55705567 is an apocalyptic number.

55705567 is a deficient number, since it is larger than the sum of its proper divisors (1).

55705567 is an equidigital number, since it uses as much as digits as its factorization.

55705567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183750, while the sum is 40.

The square root of 55705567 is about 7463.6162146777. The cubic root of 55705567 is about 381.9145460013.

The spelling of 55705567 in words is "fifty-five million, seven hundred five thousand, five hundred sixty-seven".