51227851 has 8 divisors (see below), whose sum is σ = 54434160. Its totient is φ = 48209824.

The previous prime is 51227843. The next prime is 51227867. The reversal of 51227851 is 15872215.

It is not a de Polignac number, because 51227851 - 2³ = 51227843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51227051) 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, 301 + ... + 10126.

It is an arithmetic number, because the mean of its divisors is an integer number (6804270).

Almost surely, 2^51227851 is an apocalyptic number.

51227851 is a deficient number, since it is larger than the sum of its proper divisors (3206309).

51227851 is an equidigital number, since it uses as much as digits as its factorization.

51227851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10478 (or 10444 counting only the distinct ones).

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

The square root of 51227851 is about 7157.3634112011. The cubic root of 51227851 is about 371.3944241149.

The spelling of 51227851 in words is "fifty-one million, two hundred twenty-seven thousand, eight hundred fifty-one".