51053231 has 8 divisors (see below), whose sum is σ = 52410240. Its totient is φ = 49712728.

The previous prime is 51053221. The next prime is 51053237. The reversal of 51053231 is 13235015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51053231 is a prime.

It is a super-2 number, since 2×51053231² = 5212864791078722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51053237) 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, 2270 + ... + 10356.

It is an arithmetic number, because the mean of its divisors is an integer number (6551280).

Almost surely, 2^51053231 is an apocalyptic number.

51053231 is a deficient number, since it is larger than the sum of its proper divisors (1357009).

51053231 is a wasteful number, since it uses less digits than its factorization.

51053231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8253.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 51053231 is about 7145.1543720202. The cubic root of 51053231 is about 370.9719539104.

Adding to 51053231 its reverse (13235015), we get a palindrome (64288246).

The spelling of 51053231 in words is "fifty-one million, fifty-three thousand, two hundred thirty-one".