53043645 has 16 divisors (see below), whose sum is σ = 85665600. Its totient is φ = 28024704.

The previous prime is 53043637. The next prime is 53043671. The reversal of 53043645 is 54634035.

It is not a de Polignac number, because 53043645 - 2³ = 53043637 is a prime.

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, 14920 + ... + 18129.

It is an arithmetic number, because the mean of its divisors is an integer number (5354100).

Almost surely, 2^53043645 is an apocalyptic number.

It is an amenable number.

53043645 is a deficient number, since it is larger than the sum of its proper divisors (32621955).

53043645 is a wasteful number, since it uses less digits than its factorization.

53043645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33164.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 53043645 is about 7283.1068233275. The cubic root of 53043645 is about 375.7316559947.

The spelling of 53043645 in words is "fifty-three million, forty-three thousand, six hundred forty-five".