53940915 has 72 divisors (see below), whose sum is σ = 115240320. Its totient is φ = 23192064.

The previous prime is 53940907. The next prime is 53940917. The reversal of 53940915 is 51904935.

It is not a de Polignac number, because 53940915 - 2³ = 53940907 is a prime.

It is a super-2 number, since 2×53940915² = 5819244622074450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53940915.

It is not an unprimeable number, because it can be changed into a prime (53940917) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 36766 + ... + 38204.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^53940915 is an apocalyptic number.

53940915 is an abundant number, since it is smaller than the sum of its proper divisors (61299405).

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

53940915 is a wasteful number, since it uses less digits than its factorization.

53940915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 53940915 is about 7344.4479030081. The cubic root of 53940915 is about 377.8384082971.

The spelling of 53940915 in words is "fifty-three million, nine hundred forty thousand, nine hundred fifteen".