55870879 has 2 divisors, whose sum is σ = 55870880. Its totient is φ = 55870878.

The previous prime is 55870861. The next prime is 55870909. The reversal of 55870879 is 97807855.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55870879 - 2⁵ = 55870847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55870079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27935439 + 27935440.

It is an arithmetic number, because the mean of its divisors is an integer number (27935440).

Almost surely, 2^55870879 is an apocalyptic number.

55870879 is a deficient number, since it is larger than the sum of its proper divisors (1).

55870879 is an equidigital number, since it uses as much as digits as its factorization.

55870879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 49.

The square root of 55870879 is about 7474.6825350646. The cubic root of 55870879 is about 382.2919631389.

The spelling of 55870879 in words is "fifty-five million, eight hundred seventy thousand, eight hundred seventy-nine".