53042540 has 24 divisors (see below), whose sum is σ = 112063392. Its totient is φ = 21088640.

The previous prime is 53042527. The next prime is 53042543. The reversal of 53042540 is 4524035.

It is a super-2 number, since 2×53042540² = 5627022099303200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53042543) 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, 4601 + ... + 11280.

It is an arithmetic number, because the mean of its divisors is an integer number (4669308).

Almost surely, 2^53042540 is an apocalyptic number.

It is an amenable number.

53042540 is an abundant number, since it is smaller than the sum of its proper divisors (59020852).

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

53042540 is a wasteful number, since it uses less digits than its factorization.

53042540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057 (or 16055 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 53042540 is about 7283.0309624496. The cubic root of 53042540 is about 375.7290469083.

Adding to 53042540 its reverse (4524035), we get a palindrome (57566575).

The spelling of 53042540 in words is "fifty-three million, forty-two thousand, five hundred forty".