55555651 has 2 divisors, whose sum is σ = 55555652. Its totient is φ = 55555650.

The previous prime is 55555631. The next prime is 55555679. The reversal of 55555651 is 15655555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55555651 - 2⁷ = 55555523 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55555651.

It is not a weakly prime, because it can be changed into another prime (55555631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27777825 + 27777826.

It is an arithmetic number, because the mean of its divisors is an integer number (27777826).

Almost surely, 2^55555651 is an apocalyptic number.

55555651 is a deficient number, since it is larger than the sum of its proper divisors (1).

55555651 is an equidigital number, since it uses as much as digits as its factorization.

55555651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93750, while the sum is 37.

The square root of 55555651 is about 7453.5663276045. The cubic root of 55555651 is about 381.5716326975.

The spelling of 55555651 in words is "fifty-five million, five hundred fifty-five thousand, six hundred fifty-one".