55685814 has 16 divisors (see below), whose sum is σ = 114382128. Its totient is φ = 18060192.

The previous prime is 55685813. The next prime is 55685837. The reversal of 55685814 is 41858655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55685813) 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, 125197 + ... + 125640.

It is an arithmetic number, because the mean of its divisors is an integer number (7148883).

Almost surely, 2^55685814 is an apocalyptic number.

55685814 is an abundant number, since it is smaller than the sum of its proper divisors (58696314).

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

55685814 is a wasteful number, since it uses less digits than its factorization.

55685814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250879.

The product of its digits is 192000, while the sum is 42.

The square root of 55685814 is about 7462.2928111942. The cubic root of 55685814 is about 381.8693988087.

The spelling of 55685814 in words is "fifty-five million, six hundred eighty-five thousand, eight hundred fourteen".