51797653 has 4 divisors (see below), whose sum is σ = 51812460. Its totient is φ = 51782848.

The previous prime is 51797639. The next prime is 51797659. The reversal of 51797653 is 35679715.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4765489 + 47032164 = 2183^2 + 6858^2 .

It is a cyclic number.

It is not a de Polignac number, because 51797653 - 2¹³ = 51789461 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 (51797659) 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, 1101 + ... + 10237.

It is an arithmetic number, because the mean of its divisors is an integer number (12953115).

Almost surely, 2^51797653 is an apocalyptic number.

It is an amenable number.

51797653 is a deficient number, since it is larger than the sum of its proper divisors (14807).

51797653 is an equidigital number, since it uses as much as digits as its factorization.

51797653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14806.

The product of its digits is 198450, while the sum is 43.

The square root of 51797653 is about 7197.0586353037. The cubic root of 51797653 is about 372.7663437546.

The spelling of 51797653 in words is "fifty-one million, seven hundred ninety-seven thousand, six hundred fifty-three".