55861758 has 16 divisors (see below), whose sum is σ = 124137360. Its totient is φ = 18620568.

The previous prime is 55861753. The next prime is 55861781. The reversal of 55861758 is 85716855.

55861758 is a `hidden beast` number, since 5 + 586 + 17 + 58 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55861753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517185 + ... + 517292.

It is an arithmetic number, because the mean of its divisors is an integer number (7758585).

Almost surely, 2^55861758 is an apocalyptic number.

55861758 is an abundant number, since it is smaller than the sum of its proper divisors (68275602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55861758 is a wasteful number, since it uses less digits than its factorization.

55861758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034488 (or 1034482 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The square root of 55861758 is about 7474.0723839149. The cubic root of 55861758 is about 382.2711587722.

The spelling of 55861758 in words is "fifty-five million, eight hundred sixty-one thousand, seven hundred fifty-eight".