55553613 has 8 divisors (see below), whose sum is σ = 76073568. Its totient is φ = 36034704.

The previous prime is 55553609. The next prime is 55553621. The reversal of 55553613 is 31635555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55553613 - 2² = 55553609 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55553683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250131 + ... + 250352.

It is an arithmetic number, because the mean of its divisors is an integer number (9509196).

Almost surely, 2^55553613 is an apocalyptic number.

It is an amenable number.

55553613 is a deficient number, since it is larger than the sum of its proper divisors (20519955).

55553613 is a wasteful number, since it uses less digits than its factorization.

55553613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500523.

The product of its digits is 33750, while the sum is 33.

The square root of 55553613 is about 7453.4296132720. The cubic root of 55553613 is about 381.5669667906.

The spelling of 55553613 in words is "fifty-five million, five hundred fifty-three thousand, six hundred thirteen".