53709880 has 96 divisors (see below), whose sum is σ = 143024400. Its totient is φ = 18095616.

The previous prime is 53709871. The next prime is 53709893. The reversal of 53709880 is 8890735.

It is a super-2 number, since 2×53709880² = 5769502419228800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131116 + ... + 131524.

Almost surely, 2^53709880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53709880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71512200).

53709880 is an abundant number, since it is smaller than the sum of its proper divisors (89314520).

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

53709880 is a wasteful number, since it uses less digits than its factorization.

53709880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 53709880 is about 7328.7024772466. The cubic root of 53709880 is about 377.2981948436.

The spelling of 53709880 in words is "fifty-three million, seven hundred nine thousand, eight hundred eighty".