53555790 has 32 divisors (see below), whose sum is σ = 129011616. Its totient is φ = 14228480.

The previous prime is 53555767. The next prime is 53555791. The reversal of 53555790 is 9755535.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53555791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5254 + ... + 11606.

It is an arithmetic number, because the mean of its divisors is an integer number (4031613).

Almost surely, 2^53555790 is an apocalyptic number.

53555790 is an abundant number, since it is smaller than the sum of its proper divisors (75455826).

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

53555790 is a wasteful number, since it uses less digits than its factorization.

53555790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6644.

The product of its (nonzero) digits is 118125, while the sum is 39.

The square root of 53555790 is about 7318.1821513269. The cubic root of 53555790 is about 376.9370349384.

It can be divided in two parts, 53555 and 790, that added together give a palindrome (54345).

The spelling of 53555790 in words is "fifty-three million, five hundred fifty-five thousand, seven hundred ninety".