55253639 has 8 divisors (see below), whose sum is σ = 63204000. Its totient is φ = 47317536.

The previous prime is 55253599. The next prime is 55253657. The reversal of 55253639 is 93635255.

55253639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55253639 - 2¹² = 55249543 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 (55253669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6737 + ... + 12485.

It is an arithmetic number, because the mean of its divisors is an integer number (7900500).

Almost surely, 2^55253639 is an apocalyptic number.

55253639 is a deficient number, since it is larger than the sum of its proper divisors (7950361).

55253639 is a wasteful number, since it uses less digits than its factorization.

55253639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7129.

The product of its digits is 121500, while the sum is 38.

The square root of 55253639 is about 7433.2791552585. The cubic root of 55253639 is about 380.8789418899.

The spelling of 55253639 in words is "fifty-five million, two hundred fifty-three thousand, six hundred thirty-nine".