53402560 has 56 divisors (see below), whose sum is σ = 130155696. Its totient is φ = 20858880.

The previous prime is 53402539. The next prime is 53402561. The reversal of 53402560 is 6520435.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53402561) 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, 11820 + ... + 15700.

Almost surely, 2^53402560 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 53402560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65077848).

53402560 is an abundant number, since it is smaller than the sum of its proper divisors (76753136).

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

53402560 is a wasteful number, since it uses less digits than its factorization.

53402560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941 (or 3931 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53402560 is about 7307.7055222553. The cubic root of 53402560 is about 376.5772031070.

Adding to 53402560 its reverse (6520435), we get a palindrome (59922995).

The spelling of 53402560 in words is "fifty-three million, four hundred two thousand, five hundred sixty".