53357680 has 80 divisors (see below), whose sum is σ = 130125600. Its totient is φ = 20321280.

The previous prime is 53357659. The next prime is 53357683. The reversal of 53357680 is 8675335.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53357683) 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, 252775 + ... + 252985.

It is an arithmetic number, because the mean of its divisors is an integer number (1626570).

Almost surely, 2^53357680 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 53357680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65062800).

53357680 is an abundant number, since it is smaller than the sum of its proper divisors (76767920).

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

53357680 is a wasteful number, since it uses less digits than its factorization.

53357680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 53357680 is about 7304.6341455271. The cubic root of 53357680 is about 376.4716805652.

The spelling of 53357680 in words is "fifty-three million, three hundred fifty-seven thousand, six hundred eighty".