55365851 has 2 divisors, whose sum is σ = 55365852. Its totient is φ = 55365850.

The previous prime is 55365847. The next prime is 55365883. The reversal of 55365851 is 15856355.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55365851 - 2² = 55365847 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55365251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27682925 + 27682926.

It is an arithmetic number, because the mean of its divisors is an integer number (27682926).

Almost surely, 2^55365851 is an apocalyptic number.

55365851 is a deficient number, since it is larger than the sum of its proper divisors (1).

55365851 is an equidigital number, since it uses as much as digits as its factorization.

55365851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90000, while the sum is 38.

The square root of 55365851 is about 7440.8232743427. The cubic root of 55365851 is about 381.1366038820.

The spelling of 55365851 in words is "fifty-five million, three hundred sixty-five thousand, eight hundred fifty-one".