51054331 has 4 divisors (see below), whose sum is σ = 51121152. Its totient is φ = 50987512.

The previous prime is 51054329. The next prime is 51054337. The reversal of 51054331 is 13345015.

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: 13345015 = 5 ⋅2669003.

It is a cyclic number.

It is not a de Polignac number, because 51054331 - 2¹ = 51054329 is a prime.

It is a super-2 number, since 2×51054331² = 5213089427715122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51054337) 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, 32251 + ... + 33796.

It is an arithmetic number, because the mean of its divisors is an integer number (12780288).

Almost surely, 2^51054331 is an apocalyptic number.

51054331 is a deficient number, since it is larger than the sum of its proper divisors (66821).

51054331 is an equidigital number, since it uses as much as digits as its factorization.

51054331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66820.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 51054331 is about 7145.2313468494. The cubic root of 51054331 is about 370.9746182290.

Adding to 51054331 its reverse (13345015), we get a palindrome (64399346).

The spelling of 51054331 in words is "fifty-one million, fifty-four thousand, three hundred thirty-one".