51330253 has 8 divisors (see below), whose sum is σ = 55502496. Its totient is φ = 47190000.

The previous prime is 51330247. The next prime is 51330263. The reversal of 51330253 is 35203315.

It is a happy number.

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

It is not a de Polignac number, because 51330253 - 2²¹ = 49233101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330263) 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, 4603 + ... + 11128.

It is an arithmetic number, because the mean of its divisors is an integer number (6937812).

Almost surely, 2^51330253 is an apocalyptic number.

It is an amenable number.

51330253 is a deficient number, since it is larger than the sum of its proper divisors (4172243).

51330253 is a wasteful number, since it uses less digits than its factorization.

51330253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15995.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 51330253 is about 7164.5134517286. The cubic root of 51330253 is about 371.6417259121.

Adding to 51330253 its reverse (35203315), we get a palindrome (86533568).

The spelling of 51330253 in words is "fifty-one million, three hundred thirty thousand, two hundred fifty-three".