53815983 has 8 divisors (see below), whose sum is σ = 77274288. Its totient is φ = 33117504.

The previous prime is 53815981. The next prime is 53815991. The reversal of 53815983 is 38951835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53815983 - 2¹ = 53815981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53815981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689910 + ... + 689987.

It is an arithmetic number, because the mean of its divisors is an integer number (9659286).

Almost surely, 2^53815983 is an apocalyptic number.

53815983 is a deficient number, since it is larger than the sum of its proper divisors (23458305).

53815983 is a wasteful number, since it uses less digits than its factorization.

53815983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379913.

The product of its digits is 129600, while the sum is 42.

The square root of 53815983 is about 7335.9377723642. The cubic root of 53815983 is about 377.5464802497.

The spelling of 53815983 in words is "fifty-three million, eight hundred fifteen thousand, nine hundred eighty-three".