55257599 has 8 divisors (see below), whose sum is σ = 58573008. Its totient is φ = 51949440.

The previous prime is 55257589. The next prime is 55257611. The reversal of 55257599 is 99575255.

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 55257599 - 2⁴ = 55257583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55257589) 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 7 ways as a sum of consecutive naturals, for example, 28664 + ... + 30530.

It is an arithmetic number, because the mean of its divisors is an integer number (7321626).

Almost surely, 2^55257599 is an apocalyptic number.

55257599 is a deficient number, since it is larger than the sum of its proper divisors (3315409).

55257599 is a wasteful number, since it uses less digits than its factorization.

55257599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625.

The product of its digits is 708750, while the sum is 47.

The square root of 55257599 is about 7433.5455201404. The cubic root of 55257599 is about 380.8880408054. Note that the first 3 decimals are identical.

The spelling of 55257599 in words is "fifty-five million, two hundred fifty-seven thousand, five hundred ninety-nine".