55351686 has 32 divisors (see below), whose sum is σ = 119508480. Its totient is φ = 16989984.

The previous prime is 55351669. The next prime is 55351727. The reversal of 55351686 is 68615355.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52755 + ... + 53793.

It is an arithmetic number, because the mean of its divisors is an integer number (3734640).

Almost surely, 2^55351686 is an apocalyptic number.

55351686 is an abundant number, since it is smaller than the sum of its proper divisors (64156794).

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

55351686 is a wasteful number, since it uses less digits than its factorization.

55351686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740.

The product of its digits is 108000, while the sum is 39.

The square root of 55351686 is about 7439.8713698558. The cubic root of 55351686 is about 381.1040973196.

The spelling of 55351686 in words is "fifty-five million, three hundred fifty-one thousand, six hundred eighty-six".