53538540 has 48 divisors (see below), whose sum is σ = 163537920. Its totient is φ = 12978880.

The previous prime is 53538539. The next prime is 53538557. The reversal of 53538540 is 4583535.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39900 + ... + 41219.

It is an arithmetic number, because the mean of its divisors is an integer number (3407040).

Almost surely, 2^53538540 is an apocalyptic number.

It is an amenable number.

53538540 is an abundant number, since it is smaller than the sum of its proper divisors (109999380).

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

53538540 is a wasteful number, since it uses less digits than its factorization.

53538540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81142 (or 81140 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 53538540 is about 7317.0034850340. The cubic root of 53538540 is about 376.8965608703.

The spelling of 53538540 in words is "fifty-three million, five hundred thirty-eight thousand, five hundred forty".