55588013 has 4 divisors (see below), whose sum is σ = 59864028. Its totient is φ = 51312000.

The previous prime is 55588009. The next prime is 55588031. The reversal of 55588013 is 31088555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31088555 = 5 ⋅6217711.

It can be written as a sum of positive squares in 2 ways, for example, as 9320809 + 46267204 = 3053^2 + 6802^2 .

It is a cyclic number.

It is not a de Polignac number, because 55588013 - 2² = 55588009 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 (55588003) 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, 2137988 + ... + 2138013.

It is an arithmetic number, because the mean of its divisors is an integer number (14966007).

Almost surely, 2^55588013 is an apocalyptic number.

It is an amenable number.

55588013 is a deficient number, since it is larger than the sum of its proper divisors (4276015).

55588013 is a wasteful number, since it uses less digits than its factorization.

55588013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4276014.

The product of its (nonzero) digits is 24000, while the sum is 35.

The square root of 55588013 is about 7455.7369186419. The cubic root of 55588013 is about 381.6457087157.

The spelling of 55588013 in words is "fifty-five million, five hundred eighty-eight thousand, thirteen".