52563540 has 48 divisors (see below), whose sum is σ = 147958272. Its totient is φ = 13942656.

The previous prime is 52563527. The next prime is 52563547. The reversal of 52563540 is 4536525.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52563498 and 52563507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52563547) 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, 9597 + ... + 14043.

It is an arithmetic number, because the mean of its divisors is an integer number (3082464).

Almost surely, 2^52563540 is an apocalyptic number.

It is an amenable number.

52563540 is an abundant number, since it is smaller than the sum of its proper divisors (95394732).

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

52563540 is a wasteful number, since it uses less digits than its factorization.

52563540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656 (or 4654 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 52563540 is about 7250.0717237832. The cubic root of 52563540 is about 374.5946197139.

The spelling of 52563540 in words is "fifty-two million, five hundred sixty-three thousand, five hundred forty".