55915858 has 4 divisors (see below), whose sum is σ = 83873790. Its totient is φ = 27957928.

The previous prime is 55915831. The next prime is 55915861. The reversal of 55915858 is 85851955.

It is a happy number.

55915858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 54420129 + 1495729 = 7377^2 + 1223^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13978963 + ... + 13978966.

Almost surely, 2^55915858 is an apocalyptic number.

55915858 is a deficient number, since it is larger than the sum of its proper divisors (27957932).

55915858 is a wasteful number, since it uses less digits than its factorization.

55915858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27957931.

The product of its digits is 360000, while the sum is 46.

The square root of 55915858 is about 7477.6906863015. The cubic root of 55915858 is about 382.3945240093.

It can be divided in two parts, 5591 and 5858, that added together give a square (11449 = 107²).

The spelling of 55915858 in words is "fifty-five million, nine hundred fifteen thousand, eight hundred fifty-eight".