51819599 has 8 divisors (see below), whose sum is σ = 56142240. Its totient is φ = 47545056.

The previous prime is 51819589. The next prime is 51819619. The reversal of 51819599 is 99591815.

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

It is not a de Polignac number, because 51819599 - 2⁴ = 51819583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51819589) 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, 9764 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (7017780).

Almost surely, 2^51819599 is an apocalyptic number.

51819599 is a deficient number, since it is larger than the sum of its proper divisors (4322641).

51819599 is a wasteful number, since it uses less digits than its factorization.

51819599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24049.

The product of its digits is 145800, while the sum is 47.

The square root of 51819599 is about 7198.5831244766. The cubic root of 51819599 is about 372.8189817579.

The spelling of 51819599 in words is "fifty-one million, eight hundred nineteen thousand, five hundred ninety-nine".