51428573 has 16 divisors (see below), whose sum is σ = 62728320. Its totient is φ = 41181696.

The previous prime is 51428539. The next prime is 51428581. The reversal of 51428573 is 37582415.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51428573 - 2⁸ = 51428317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51428593) 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, 7061 + ... + 12357.

It is an arithmetic number, because the mean of its divisors is an integer number (3920520).

Almost surely, 2^51428573 is an apocalyptic number.

It is an amenable number.

51428573 is a deficient number, since it is larger than the sum of its proper divisors (11299747).

51428573 is a wasteful number, since it uses less digits than its factorization.

51428573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5396.

The product of its digits is 33600, while the sum is 35.

The square root of 51428573 is about 7171.3717655690. The cubic root of 51428573 is about 371.8788603323.

The spelling of 51428573 in words is "fifty-one million, four hundred twenty-eight thousand, five hundred seventy-three".