55687723 has 8 divisors (see below), whose sum is σ = 68538848. Its totient is φ = 44060544.

The previous prime is 55687711. The next prime is 55687729. The reversal of 55687723 is 32778655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55687723 - 2⁵ = 55687691 is a prime.

It is a super-2 number, since 2×55687723² = 6202244985849458, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55687723.

It is not an unprimeable number, because it can be changed into a prime (55687729) 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, 305886 + ... + 306067.

It is an arithmetic number, because the mean of its divisors is an integer number (8567356).

Almost surely, 2^55687723 is an apocalyptic number.

55687723 is a deficient number, since it is larger than the sum of its proper divisors (12851125).

55687723 is a wasteful number, since it uses less digits than its factorization.

55687723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611973.

The product of its digits is 352800, while the sum is 43.

The square root of 55687723 is about 7462.4207198469. The cubic root of 55687723 is about 381.8737624596.

The spelling of 55687723 in words is "fifty-five million, six hundred eighty-seven thousand, seven hundred twenty-three".