55525620 has 48 divisors (see below), whose sum is σ = 155897280. Its totient is φ = 14766336.

The previous prime is 55525597. The next prime is 55525627. The reversal of 55525620 is 2652555.

55525620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55525627) 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 15 ways as a sum of consecutive naturals, for example, 25536 + ... + 27624.

It is an arithmetic number, because the mean of its divisors is an integer number (3247860).

Almost surely, 2^55525620 is an apocalyptic number.

It is an amenable number.

55525620 is an abundant number, since it is smaller than the sum of its proper divisors (100371660).

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

55525620 is a wasteful number, since it uses less digits than its factorization.

55525620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2542 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 55525620 is about 7451.5515162951. The cubic root of 55525620 is about 381.5028665573.

The spelling of 55525620 in words is "fifty-five million, five hundred twenty-five thousand, six hundred twenty".