52120397 has 4 divisors (see below), whose sum is σ = 59566176. Its totient is φ = 44674620.

The previous prime is 52120381. The next prime is 52120427. The reversal of 52120397 is 79302125.

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 52120397 - 2⁴ = 52120381 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 (52120297) 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, 3722879 + ... + 3722892.

It is an arithmetic number, because the mean of its divisors is an integer number (14891544).

Almost surely, 2^52120397 is an apocalyptic number.

It is an amenable number.

52120397 is a deficient number, since it is larger than the sum of its proper divisors (7445779).

52120397 is an equidigital number, since it uses as much as digits as its factorization.

52120397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7445778.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 52120397 is about 7219.4457543498. The cubic root of 52120397 is about 373.5389597639.

The spelling of 52120397 in words is "fifty-two million, one hundred twenty thousand, three hundred ninety-seven".