51197759 has 8 divisors (see below), whose sum is σ = 51750000. Its totient is φ = 50648832.

The previous prime is 51197749. The next prime is 51197777. The reversal of 51197759 is 95779115.

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

It is a cyclic number.

It is not a de Polignac number, because 51197759 - 2⁴ = 51197743 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 (51197749) 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, 40367 + ... + 41615.

It is an arithmetic number, because the mean of its divisors is an integer number (6468750).

Almost surely, 2^51197759 is an apocalyptic number.

51197759 is a deficient number, since it is larger than the sum of its proper divisors (552241).

51197759 is a wasteful number, since it uses less digits than its factorization.

51197759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657.

The product of its digits is 99225, while the sum is 44.

The square root of 51197759 is about 7155.2609316502. The cubic root of 51197759 is about 371.3216890055.

The spelling of 51197759 in words is "fifty-one million, one hundred ninety-seven thousand, seven hundred fifty-nine".