54783819 has 12 divisors (see below), whose sum is σ = 79466400. Its totient is φ = 36368304.

The previous prime is 54783803. The next prime is 54783847. The reversal of 54783819 is 91838745.

It is not a de Polignac number, because 54783819 - 2⁴ = 54783803 is a prime.

It is a super-2 number, since 2×54783819² = 6002533648449522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54783719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10584 + ... + 14885.

It is an arithmetic number, because the mean of its divisors is an integer number (6622200).

Almost surely, 2^54783819 is an apocalyptic number.

54783819 is a deficient number, since it is larger than the sum of its proper divisors (24682581).

54783819 is a wasteful number, since it uses less digits than its factorization.

54783819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25714 (or 25711 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 54783819 is about 7401.6092169203. The cubic root of 54783819 is about 379.7963336132.

The spelling of 54783819 in words is "fifty-four million, seven hundred eighty-three thousand, eight hundred nineteen".