53381979 has 24 divisors (see below), whose sum is σ = 88957440. Its totient is φ = 30215088.

The previous prime is 53381957. The next prime is 53382013. The reversal of 53381979 is 97918335.

It is a happy number.

It is not a de Polignac number, because 53381979 - 2⁵ = 53381947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53381929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2782 + ... + 10700.

It is an arithmetic number, because the mean of its divisors is an integer number (3706560).

Almost surely, 2^53381979 is an apocalyptic number.

53381979 is a deficient number, since it is larger than the sum of its proper divisors (35575461).

53381979 is a wasteful number, since it uses less digits than its factorization.

53381979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039 (or 8036 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 53381979 is about 7306.2972154163. The cubic root of 53381979 is about 376.5288200877.

The spelling of 53381979 in words is "fifty-three million, three hundred eighty-one thousand, nine hundred seventy-nine".