51228571 has 4 divisors (see below), whose sum is σ = 51336000. Its totient is φ = 51121144.

The previous prime is 51228563. The next prime is 51228607. The reversal of 51228571 is 17582215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51228571 - 2³ = 51228563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51228511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52996 + ... + 53953.

It is an arithmetic number, because the mean of its divisors is an integer number (12834000).

Almost surely, 2^51228571 is an apocalyptic number.

51228571 is a deficient number, since it is larger than the sum of its proper divisors (107429).

51228571 is a wasteful number, since it uses less digits than its factorization.

51228571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107428.

The product of its digits is 5600, while the sum is 31.

The square root of 51228571 is about 7157.4137088756. The cubic root of 51228571 is about 371.3961640716.

The spelling of 51228571 in words is "fifty-one million, two hundred twenty-eight thousand, five hundred seventy-one".