52497280 has 64 divisors (see below), whose sum is σ = 136928880. Its totient is φ = 19087360.

The previous prime is 52497257. The next prime is 52497287. The reversal of 52497280 is 8279425.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52497287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3312 + ... + 10768.

Almost surely, 2^52497280 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 52497280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68464440).

52497280 is an abundant number, since it is smaller than the sum of its proper divisors (84431600).

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

52497280 is a wasteful number, since it uses less digits than its factorization.

52497280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7487 (or 7475 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 52497280 is about 7245.5006728314. The cubic root of 52497280 is about 374.4371526674.

The spelling of 52497280 in words is "fifty-two million, four hundred ninety-seven thousand, two hundred eighty".