53681873 has 4 divisors (see below), whose sum is σ = 61350720. Its totient is φ = 46013028.

The previous prime is 53681819. The next prime is 53681899. The reversal of 53681873 is 37818635.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53681873 - 2⁶ = 53681809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53681873.

It is not an unprimeable number, because it can be changed into a prime (53681773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3834413 + ... + 3834426.

It is an arithmetic number, because the mean of its divisors is an integer number (15337680).

Almost surely, 2^53681873 is an apocalyptic number.

It is an amenable number.

53681873 is a deficient number, since it is larger than the sum of its proper divisors (7668847).

53681873 is an equidigital number, since it uses as much as digits as its factorization.

53681873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668846.

The product of its digits is 120960, while the sum is 41.

The square root of 53681873 is about 7326.7914532898. The cubic root of 53681873 is about 377.2326027664.

The spelling of 53681873 in words is "fifty-three million, six hundred eighty-one thousand, eight hundred seventy-three".