52812797 has 4 divisors (see below), whose sum is σ = 54100956. Its totient is φ = 51524640.

The previous prime is 52812791. The next prime is 52812821. The reversal of 52812797 is 79721825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3728761 + 49084036 = 1931^2 + 7006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52812797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1288117 = 52812797 / (5 + 2 + 8 + 1 + 2 + 7 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52812791) 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, 644018 + ... + 644099.

It is an arithmetic number, because the mean of its divisors is an integer number (13525239).

Almost surely, 2^52812797 is an apocalyptic number.

It is an amenable number.

52812797 is a deficient number, since it is larger than the sum of its proper divisors (1288159).

52812797 is a wasteful number, since it uses less digits than its factorization.

52812797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1288158.

The product of its digits is 70560, while the sum is 41.

The square root of 52812797 is about 7267.2413610668. The cubic root of 52812797 is about 375.1857971151.

The spelling of 52812797 in words is "fifty-two million, eight hundred twelve thousand, seven hundred ninety-seven".