53478685 has 16 divisors (see below), whose sum is σ = 73177776. Its totient is φ = 37168128.

The previous prime is 53478661. The next prime is 53478701. The reversal of 53478685 is 58687435.

It can be written as a sum of positive squares in 8 ways, for example, as 86436 + 53392249 = 294^2 + 7307^2 .

It is a cyclic number.

It is not a de Polignac number, because 53478685 - 2²⁵ = 19924253 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 23094 + ... + 25303.

It is an arithmetic number, because the mean of its divisors is an integer number (4573611).

Almost surely, 2^53478685 is an apocalyptic number.

It is an amenable number.

53478685 is a deficient number, since it is larger than the sum of its proper divisors (19699091).

53478685 is a wasteful number, since it uses less digits than its factorization.

53478685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48432.

The product of its digits is 806400, while the sum is 46.

The square root of 53478685 is about 7312.9122106039. The cubic root of 53478685 is about 376.7560542635.

The spelling of 53478685 in words is "fifty-three million, four hundred seventy-eight thousand, six hundred eighty-five".