55657723 has 16 divisors (see below), whose sum is σ = 63763200. Its totient is φ = 48088480.

The previous prime is 55657717. The next prime is 55657739. The reversal of 55657723 is 32775655.

It is not a de Polignac number, because 55657723 - 2⁹ = 55657211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55657703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44673 + ... + 45901.

It is an arithmetic number, because the mean of its divisors is an integer number (3985200).

Almost surely, 2^55657723 is an apocalyptic number.

55657723 is a deficient number, since it is larger than the sum of its proper divisors (8105477).

55657723 is a wasteful number, since it uses less digits than its factorization.

55657723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442.

The product of its digits is 220500, while the sum is 40.

The square root of 55657723 is about 7460.4103774524. The cubic root of 55657723 is about 381.8051760034.

The spelling of 55657723 in words is "fifty-five million, six hundred fifty-seven thousand, seven hundred twenty-three".