52620709 has 4 divisors (see below), whose sum is σ = 55390240. Its totient is φ = 49851180.

The previous prime is 52620707. The next prime is 52620751. The reversal of 52620709 is 90702625.

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 52620709 - 2¹ = 52620707 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 (52620707) 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, 1384737 + ... + 1384774.

It is an arithmetic number, because the mean of its divisors is an integer number (13847560).

Almost surely, 2^52620709 is an apocalyptic number.

It is an amenable number.

52620709 is a deficient number, since it is larger than the sum of its proper divisors (2769531).

52620709 is a wasteful number, since it uses less digits than its factorization.

52620709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769530.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 52620709 is about 7254.0133029930. The cubic root of 52620709 is about 374.7303756685.

The spelling of 52620709 in words is "fifty-two million, six hundred twenty thousand, seven hundred nine".