51150227 has 4 divisors (see below), whose sum is σ = 52017240. Its totient is φ = 50283216.

The previous prime is 51150181. The next prime is 51150233. The reversal of 51150227 is 72205115.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72205115 = 5 ⋅14441023.

It is a cyclic number.

It is not a de Polignac number, because 51150227 - 2⁸ = 51149971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51158227) 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, 433418 + ... + 433535.

It is an arithmetic number, because the mean of its divisors is an integer number (13004310).

Almost surely, 2^51150227 is an apocalyptic number.

51150227 is a deficient number, since it is larger than the sum of its proper divisors (867013).

51150227 is an equidigital number, since it uses as much as digits as its factorization.

51150227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867012.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51150227 is about 7151.9386882159. The cubic root of 51150227 is about 371.2067417391.

The spelling of 51150227 in words is "fifty-one million, one hundred fifty thousand, two hundred twenty-seven".