53873505 has 80 divisors (see below), whose sum is σ = 114115584. Its totient is φ = 23794560.

The previous prime is 53873471. The next prime is 53873507. The reversal of 53873505 is 50537835.

53873505 is a `hidden beast` number, since 538 + 73 + 50 + 5 = 666.

It is not a de Polignac number, because 53873505 - 2⁷ = 53873377 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53873505.

It is not an unprimeable number, because it can be changed into a prime (53873507) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 87579 + ... + 88191.

Almost surely, 2^53873505 is an apocalyptic number.

It is an amenable number.

53873505 is an abundant number, since it is smaller than the sum of its proper divisors (60242079).

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

53873505 is a wasteful number, since it uses less digits than its factorization.

53873505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 53873505 is about 7339.8572874409. The cubic root of 53873505 is about 377.6809477097.

The spelling of 53873505 in words is "fifty-three million, eight hundred seventy-three thousand, five hundred five".