52120197 has 6 divisors (see below), whose sum is σ = 75284742. Its totient is φ = 34746792.

The previous prime is 52120193. The next prime is 52120213. The reversal of 52120197 is 79102125.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 8678916 = 6591^2 + 2946^2 .

It is not a de Polignac number, because 52120197 - 2² = 52120193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52120197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52120193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2895558 + ... + 2895575.

It is an arithmetic number, because the mean of its divisors is an integer number (12547457).

Almost surely, 2^52120197 is an apocalyptic number.

It is an amenable number.

52120197 is a deficient number, since it is larger than the sum of its proper divisors (23164545).

52120197 is a wasteful number, since it uses less digits than its factorization.

52120197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791139 (or 5791136 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 52120197 is about 7219.4319028577. The cubic root of 52120197 is about 373.5384819734.

The spelling of 52120197 in words is "fifty-two million, one hundred twenty thousand, one hundred ninety-seven".