52820653 has 4 divisors (see below), whose sum is σ = 52843968. Its totient is φ = 52797340.

The previous prime is 52820617. The next prime is 52820659. The reversal of 52820653 is 35602825.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 52820653 - 2²¹ = 50723501 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52820659) 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, 7843 + ... + 12928.

It is an arithmetic number, because the mean of its divisors is an integer number (13210992).

Almost surely, 2^52820653 is an apocalyptic number.

It is an amenable number.

52820653 is a deficient number, since it is larger than the sum of its proper divisors (23315).

52820653 is a wasteful number, since it uses less digits than its factorization.

52820653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23314.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 52820653 is about 7267.7818486798. The cubic root of 52820653 is about 375.2043993836.

The spelling of 52820653 in words is "fifty-two million, eight hundred twenty thousand, six hundred fifty-three".