55253620 has 48 divisors (see below), whose sum is σ = 118879488. Its totient is φ = 21566720.

The previous prime is 55253599. The next prime is 55253657. The reversal of 55253620 is 2635255.

55253620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 237024 + ... + 237256.

It is an arithmetic number, because the mean of its divisors is an integer number (2476656).

Almost surely, 2^55253620 is an apocalyptic number.

It is an amenable number.

55253620 is an abundant number, since it is smaller than the sum of its proper divisors (63625868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55253620 is a wasteful number, since it uses less digits than its factorization.

55253620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55253620 is about 7433.2778772221. The cubic root of 55253620 is about 380.8788982324.

Adding to 55253620 its reverse (2635255), we get a palindrome (57888875).

The spelling of 55253620 in words is "fifty-five million, two hundred fifty-three thousand, six hundred twenty".