53535280 has 80 divisors (see below), whose sum is σ = 128831040. Its totient is φ = 20680704.

The previous prime is 53535271. The next prime is 53535281. The reversal of 53535280 is 8253535.

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

It is not an unprimeable number, because it can be changed into a prime (53535281) 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, 519709 + ... + 519811.

It is an arithmetic number, because the mean of its divisors is an integer number (1610388).

Almost surely, 2^53535280 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 53535280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64415520).

53535280 is an abundant number, since it is smaller than the sum of its proper divisors (75295760).

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

53535280 is a wasteful number, since it uses less digits than its factorization.

53535280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 53535280 is about 7316.7807128545. The cubic root of 53535280 is about 376.8889108813. Note that the first 3 decimals are identical.

The spelling of 53535280 in words is "fifty-three million, five hundred thirty-five thousand, two hundred eighty".