55458551 has 2 divisors, whose sum is σ = 55458552. Its totient is φ = 55458550.

The previous prime is 55458541. The next prime is 55458619. The reversal of 55458551 is 15585455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55458551 - 2²² = 51264247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55458541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27729275 + 27729276.

It is an arithmetic number, because the mean of its divisors is an integer number (27729276).

Almost surely, 2^55458551 is an apocalyptic number.

55458551 is a deficient number, since it is larger than the sum of its proper divisors (1).

55458551 is an equidigital number, since it uses as much as digits as its factorization.

55458551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100000, while the sum is 38.

The square root of 55458551 is about 7447.0498185523. The cubic root of 55458551 is about 381.3491998067.

The spelling of 55458551 in words is "fifty-five million, four hundred fifty-eight thousand, five hundred fifty-one".