55883857 has 2 divisors, whose sum is σ = 55883858. Its totient is φ = 55883856.

The previous prime is 55883851. The next prime is 55883873. The reversal of 55883857 is 75838855.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39891856 + 15992001 = 6316^2 + 3999^2 .

It is a cyclic number.

It is not a de Polignac number, because 55883857 - 2²³ = 47495249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55883857.

It is not a weakly prime, because it can be changed into another prime (55883851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27941928 + 27941929.

It is an arithmetic number, because the mean of its divisors is an integer number (27941929).

Almost surely, 2^55883857 is an apocalyptic number.

It is an amenable number.

55883857 is a deficient number, since it is larger than the sum of its proper divisors (1).

55883857 is an equidigital number, since it uses as much as digits as its factorization.

55883857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344000, while the sum is 49.

The square root of 55883857 is about 7475.5506151721. The cubic root of 55883857 is about 382.3215611518.

The spelling of 55883857 in words is "fifty-five million, eight hundred eighty-three thousand, eight hundred fifty-seven".