55649107 has 2 divisors, whose sum is σ = 55649108. Its totient is φ = 55649106.

The previous prime is 55649053. The next prime is 55649129. The reversal of 55649107 is 70194655.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55649107 is a prime.

It is not a weakly prime, because it can be changed into another prime (55649807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27824553 + 27824554.

It is an arithmetic number, because the mean of its divisors is an integer number (27824554).

Almost surely, 2^55649107 is an apocalyptic number.

55649107 is a deficient number, since it is larger than the sum of its proper divisors (1).

55649107 is an equidigital number, since it uses as much as digits as its factorization.

55649107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 55649107 is about 7459.8329069759. The cubic root of 55649107 is about 381.7854734178.

The spelling of 55649107 in words is "fifty-five million, six hundred forty-nine thousand, one hundred seven".