53209197 has 8 divisors (see below), whose sum is σ = 78828480. Its totient is φ = 35472780.

The previous prime is 53209193. The next prime is 53209223. The reversal of 53209197 is 79190235.

It is not a de Polignac number, because 53209197 - 2² = 53209193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53209193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985329 + ... + 985382.

It is an arithmetic number, because the mean of its divisors is an integer number (9853560).

Almost surely, 2^53209197 is an apocalyptic number.

It is an amenable number.

53209197 is a deficient number, since it is larger than the sum of its proper divisors (25619283).

53209197 is a wasteful number, since it uses less digits than its factorization.

53209197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970720 (or 1970714 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 53209197 is about 7294.4634483970. The cubic root of 53209197 is about 376.1221427722.

The spelling of 53209197 in words is "fifty-three million, two hundred nine thousand, one hundred ninety-seven".