51330053 has 4 divisors (see below), whose sum is σ = 51674700. Its totient is φ = 50985408.

The previous prime is 51330049. The next prime is 51330061. The reversal of 51330053 is 35003315.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35003315 = 5 ⋅7000663.

It can be written as a sum of positive squares in 2 ways, for example, as 21921124 + 29408929 = 4682^2 + 5423^2 .

It is a cyclic number.

It is not a de Polignac number, because 51330053 - 2² = 51330049 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 (51333053) 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, 172100 + ... + 172397.

It is an arithmetic number, because the mean of its divisors is an integer number (12918675).

Almost surely, 2^51330053 is an apocalyptic number.

It is an amenable number.

51330053 is a deficient number, since it is larger than the sum of its proper divisors (344647).

51330053 is a wasteful number, since it uses less digits than its factorization.

51330053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344646.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 51330053 is about 7164.4994940331. The cubic root of 51330053 is about 371.6412432309.

Adding to 51330053 its reverse (35003315), we get a palindrome (86333368).

The spelling of 51330053 in words is "fifty-one million, three hundred thirty thousand, fifty-three".