53981803 has 4 divisors (see below), whose sum is σ = 55130400. Its totient is φ = 52833208.

The previous prime is 53981777. The next prime is 53981827. The reversal of 53981803 is 30818935.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53981803 - 2⁵ = 53981771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53981843) 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, 574228 + ... + 574321.

It is an arithmetic number, because the mean of its divisors is an integer number (13782600).

Almost surely, 2^53981803 is an apocalyptic number.

53981803 is a deficient number, since it is larger than the sum of its proper divisors (1148597).

53981803 is a wasteful number, since it uses less digits than its factorization.

53981803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148596.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 53981803 is about 7347.2309750000. The cubic root of 53981803 is about 377.9338531923.

The spelling of 53981803 in words is "fifty-three million, nine hundred eighty-one thousand, eight hundred three".