53981679 has 16 divisors (see below), whose sum is σ = 75996800. Its totient is φ = 33988896.

The previous prime is 53981651. The next prime is 53981687. The reversal of 53981679 is 97618935.

It is not a de Polignac number, because 53981679 - 2⁸ = 53981423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53981689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19992 + ... + 22530.

It is an arithmetic number, because the mean of its divisors is an integer number (4749800).

Almost surely, 2^53981679 is an apocalyptic number.

53981679 is a deficient number, since it is larger than the sum of its proper divisors (22015121).

53981679 is a wasteful number, since it uses less digits than its factorization.

53981679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934.

The product of its digits is 408240, while the sum is 48.

The square root of 53981679 is about 7347.2225364419. Note that the first 3 decimals coincide. The cubic root of 53981679 is about 377.9335638119.

The spelling of 53981679 in words is "fifty-three million, nine hundred eighty-one thousand, six hundred seventy-nine".