55564723 has 4 divisors (see below), whose sum is σ = 56613168. Its totient is φ = 54516280.

The previous prime is 55564709. The next prime is 55564727. The reversal of 55564723 is 32746555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32746555 = 5 ⋅6549311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55564723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55564727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524143 + ... + 524248.

It is an arithmetic number, because the mean of its divisors is an integer number (14153292).

Almost surely, 2^55564723 is an apocalyptic number.

55564723 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

55564723 is a deficient number, since it is larger than the sum of its proper divisors (1048445).

55564723 is a wasteful number, since it uses less digits than its factorization.

55564723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048444.

The product of its digits is 126000, while the sum is 37.

The square root of 55564723 is about 7454.1748705004. The cubic root of 55564723 is about 381.5924012385.

The spelling of 55564723 in words is "fifty-five million, five hundred sixty-four thousand, seven hundred twenty-three".