55576649 has 2 divisors, whose sum is σ = 55576650. Its totient is φ = 55576648.

The previous prime is 55576639. The next prime is 55576657. The reversal of 55576649 is 94667555.

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., 32947600 + 22629049 = 5740^2 + 4757^2 .

It is a cyclic number.

It is not a de Polignac number, because 55576649 - 2²⁴ = 38799433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55576639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27788324 + 27788325.

It is an arithmetic number, because the mean of its divisors is an integer number (27788325).

Almost surely, 2^55576649 is an apocalyptic number.

It is an amenable number.

55576649 is a deficient number, since it is larger than the sum of its proper divisors (1).

55576649 is an equidigital number, since it uses as much as digits as its factorization.

55576649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134000, while the sum is 47.

The square root of 55576649 is about 7454.9747819828. The cubic root of 55576649 is about 381.6197000064.

The spelling of 55576649 in words is "fifty-five million, five hundred seventy-six thousand, six hundred forty-nine".