53819866 has 8 divisors (see below), whose sum is σ = 81444564. Its totient is φ = 26671680.

The previous prime is 53819861. The next prime is 53819881. The reversal of 53819866 is 66891835.

It can be written as a sum of positive squares in 2 ways, for example, as 53714241 + 105625 = 7329^2 + 325^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53819861) 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, 118845 + ... + 119296.

Almost surely, 2^53819866 is an apocalyptic number.

53819866 is a deficient number, since it is larger than the sum of its proper divisors (27624698).

53819866 is a wasteful number, since it uses less digits than its factorization.

53819866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238256.

The product of its digits is 311040, while the sum is 46.

The square root of 53819866 is about 7336.2024235976. The cubic root of 53819866 is about 377.5555604376. Note that the first 4 decimals are identical.

The spelling of 53819866 in words is "fifty-three million, eight hundred nineteen thousand, eight hundred sixty-six".