53609780 has 48 divisors (see below), whose sum is σ = 134265600. Its totient is φ = 17580288.

The previous prime is 53609779. The next prime is 53609791. The reversal of 53609780 is 8790635.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5105 + ... + 11544.

It is an arithmetic number, because the mean of its divisors is an integer number (2797200).

Almost surely, 2^53609780 is an apocalyptic number.

It is an amenable number.

53609780 is an abundant number, since it is smaller than the sum of its proper divisors (80655820).

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

53609780 is a wasteful number, since it uses less digits than its factorization.

53609780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16688 (or 16686 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 53609780 is about 7321.8699797251. The cubic root of 53609780 is about 377.0636567642.

The spelling of 53609780 in words is "fifty-three million, six hundred nine thousand, seven hundred eighty".