51895969 has 8 divisors (see below), whose sum is σ = 53778560. Its totient is φ = 50044176.

The previous prime is 51895939. The next prime is 51895979. The reversal of 51895969 is 96959815.

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 51895969 - 2⁵ = 51895937 is a prime.

It is a super-2 number, since 2×51895969² = 5386383196897922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51895939) 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, 4242 + ... + 11035.

It is an arithmetic number, because the mean of its divisors is an integer number (6722320).

Almost surely, 2^51895969 is an apocalyptic number.

It is an amenable number.

51895969 is a deficient number, since it is larger than the sum of its proper divisors (1882591).

51895969 is a wasteful number, since it uses less digits than its factorization.

51895969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15399.

The product of its digits is 874800, while the sum is 52.

The square root of 51895969 is about 7203.8856875994. The cubic root of 51895969 is about 373.0020412599.

The spelling of 51895969 in words is "fifty-one million, eight hundred ninety-five thousand, nine hundred sixty-nine".