51454331 has 4 divisors (see below), whose sum is σ = 52549152. Its totient is φ = 50359512.

The previous prime is 51454321. The next prime is 51454343. The reversal of 51454331 is 13345415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51454331 is a prime.

It is a super-2 number, since 2×51454331² = 5295096357315122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51454331.

It is not an unprimeable number, because it can be changed into a prime (51454321) 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, 547340 + ... + 547433.

It is an arithmetic number, because the mean of its divisors is an integer number (13137288).

Almost surely, 2^51454331 is an apocalyptic number.

51454331 is a deficient number, since it is larger than the sum of its proper divisors (1094821).

51454331 is a wasteful number, since it uses less digits than its factorization.

51454331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094820.

The product of its digits is 3600, while the sum is 26.

The square root of 51454331 is about 7173.1674314768. The cubic root of 51454331 is about 371.9409351439.

Adding to 51454331 its reverse (13345415), we get a palindrome (64799746).

It can be divided in two parts, 514 and 54331, that added together give a palindrome (54845).

The spelling of 51454331 in words is "fifty-one million, four hundred fifty-four thousand, three hundred thirty-one".