51428967 has 8 divisors (see below), whose sum is σ = 68605296. Its totient is φ = 34269312.

The previous prime is 51428959. The next prime is 51428981. The reversal of 51428967 is 76982415.

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

It is not a de Polignac number, because 51428967 - 2³ = 51428959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51421967) 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, 8773 + ... + 13409.

It is an arithmetic number, because the mean of its divisors is an integer number (8575662).

Almost surely, 2^51428967 is an apocalyptic number.

51428967 is a deficient number, since it is larger than the sum of its proper divisors (17176329).

51428967 is a wasteful number, since it uses less digits than its factorization.

51428967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337.

The product of its digits is 120960, while the sum is 42.

The square root of 51428967 is about 7171.3992358535. The cubic root of 51428967 is about 371.8798099983.

The spelling of 51428967 in words is "fifty-one million, four hundred twenty-eight thousand, nine hundred sixty-seven".