55632013 has 4 divisors (see below), whose sum is σ = 55744000. Its totient is φ = 55520028.

The previous prime is 55631993. The next prime is 55632077. The reversal of 55632013 is 31023655.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55632013 - 2¹⁷ = 55500941 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 (55636013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55245 + ... + 56242.

It is an arithmetic number, because the mean of its divisors is an integer number (13936000).

Almost surely, 2^55632013 is an apocalyptic number.

It is an amenable number.

55632013 is a deficient number, since it is larger than the sum of its proper divisors (111987).

55632013 is a wasteful number, since it uses less digits than its factorization.

55632013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111986.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 55632013 is about 7458.6870828585. The cubic root of 55632013 is about 381.7463777966.

Adding to 55632013 its reverse (31023655), we get a palindrome (86655668).

The spelling of 55632013 in words is "fifty-five million, six hundred thirty-two thousand, thirteen".