51759399 has 4 divisors (see below), whose sum is σ = 69012536. Its totient is φ = 34506264.

The previous prime is 51759397. The next prime is 51759427. The reversal of 51759399 is 99395715.

51759399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51759399 - 2¹ = 51759397 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 (51759397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8626564 + ... + 8626569.

It is an arithmetic number, because the mean of its divisors is an integer number (17253134).

Almost surely, 2^51759399 is an apocalyptic number.

51759399 is a deficient number, since it is larger than the sum of its proper divisors (17253137).

51759399 is a wasteful number, since it uses less digits than its factorization.

51759399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17253136.

The product of its digits is 382725, while the sum is 48.

The square root of 51759399 is about 7194.4005309685. The cubic root of 51759399 is about 372.6745550682.

The spelling of 51759399 in words is "fifty-one million, seven hundred fifty-nine thousand, three hundred ninety-nine".