55817573 has 32 divisors (see below), whose sum is σ = 71331840. Its totient is φ = 42577920.

The previous prime is 55817563. The next prime is 55817581. The reversal of 55817573 is 37571855.

It is not a de Polignac number, because 55817573 - 2⁸ = 55817317 is a prime.

It is a super-2 number, since 2×55817573² = 6231202911220658, which contains 22 as substring.

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 55817573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55817563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217061 + ... + 217317.

It is an arithmetic number, because the mean of its divisors is an integer number (2229120).

Almost surely, 2^55817573 is an apocalyptic number.

It is an amenable number.

55817573 is a deficient number, since it is larger than the sum of its proper divisors (15514267).

55817573 is a wasteful number, since it uses less digits than its factorization.

55817573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377.

The product of its digits is 147000, while the sum is 41.

The square root of 55817573 is about 7471.1159139716. The cubic root of 55817573 is about 382.1703437898.

The spelling of 55817573 in words is "fifty-five million, eight hundred seventeen thousand, five hundred seventy-three".