55855758 has 16 divisors (see below), whose sum is σ = 127670400. Its totient is φ = 15958776.

The previous prime is 55855747. The next prime is 55855759. The reversal of 55855758 is 85755855.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55855759) 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, 664908 + ... + 664991.

It is an arithmetic number, because the mean of its divisors is an integer number (7979400).

Almost surely, 2^55855758 is an apocalyptic number.

55855758 is an abundant number, since it is smaller than the sum of its proper divisors (71814642).

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

55855758 is a wasteful number, since it uses less digits than its factorization.

55855758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329911.

The product of its digits is 1400000, while the sum is 48.

The square root of 55855758 is about 7473.6709855331. The cubic root of 55855758 is about 382.2574719546.

The spelling of 55855758 in words is "fifty-five million, eight hundred fifty-five thousand, seven hundred fifty-eight".