51468391 has 16 divisors (see below), whose sum is σ = 56536704. Its totient is φ = 46570464.

The previous prime is 51468349. The next prime is 51468409. The reversal of 51468391 is 19386415.

It is a cyclic number.

It is not a de Polignac number, because 51468391 - 2⁹ = 51467879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51468391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51468331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226620 + ... + 226846.

It is an arithmetic number, because the mean of its divisors is an integer number (3533544).

Almost surely, 2^51468391 is an apocalyptic number.

51468391 is a deficient number, since it is larger than the sum of its proper divisors (5068313).

51468391 is a wasteful number, since it uses less digits than its factorization.

51468391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510.

The product of its digits is 25920, while the sum is 37.

The square root of 51468391 is about 7174.1474057898. The cubic root of 51468391 is about 371.9748099295.

The spelling of 51468391 in words is "fifty-one million, four hundred sixty-eight thousand, three hundred ninety-one".