51316653 has 4 divisors (see below), whose sum is σ = 68422208. Its totient is φ = 34211100.

The previous prime is 51316637. The next prime is 51316709. The reversal of 51316653 is 35661315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51316653 - 2⁴ = 51316637 is a prime.

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 51316653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51316613) 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, 8552773 + ... + 8552778.

It is an arithmetic number, because the mean of its divisors is an integer number (17105552).

Almost surely, 2^51316653 is an apocalyptic number.

It is an amenable number.

51316653 is a deficient number, since it is larger than the sum of its proper divisors (17105555).

51316653 is a wasteful number, since it uses less digits than its factorization.

51316653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17105554.

The product of its digits is 8100, while the sum is 30.

The square root of 51316653 is about 7163.5642664808. The cubic root of 51316653 is about 371.6089007351.

Adding to 51316653 its reverse (35661315), we get a palindrome (86977968).

The spelling of 51316653 in words is "fifty-one million, three hundred sixteen thousand, six hundred fifty-three".