55613723 has 4 divisors (see below), whose sum is σ = 60669528. Its totient is φ = 50557920.

The previous prime is 55613683. The next prime is 55613743. The reversal of 55613723 is 32731655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55613723 - 2¹⁰ = 55612699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55613723.

It is not an unprimeable number, because it can be changed into a prime (55613743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2527886 + ... + 2527907.

It is an arithmetic number, because the mean of its divisors is an integer number (15167382).

Almost surely, 2^55613723 is an apocalyptic number.

55613723 is a deficient number, since it is larger than the sum of its proper divisors (5055805).

55613723 is a wasteful number, since it uses less digits than its factorization.

55613723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055804.

The product of its digits is 18900, while the sum is 32.

The square root of 55613723 is about 7457.4608949695. The cubic root of 55613723 is about 381.7045379387.

The spelling of 55613723 in words is "fifty-five million, six hundred thirteen thousand, seven hundred twenty-three".