53197761 has 4 divisors (see below), whose sum is σ = 70930352. Its totient is φ = 35465172.

The previous prime is 53197733. The next prime is 53197813. The reversal of 53197761 is 16779135.

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 de Polignac number, because none of the positive numbers 2^k-53197761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53197961) 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, 8866291 + ... + 8866296.

It is an arithmetic number, because the mean of its divisors is an integer number (17732588).

Almost surely, 2^53197761 is an apocalyptic number.

It is an amenable number.

53197761 is a deficient number, since it is larger than the sum of its proper divisors (17732591).

53197761 is a wasteful number, since it uses less digits than its factorization.

53197761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17732590.

The product of its digits is 39690, while the sum is 39.

The square root of 53197761 is about 7293.6795240811. The cubic root of 53197761 is about 376.0951947930.

The spelling of 53197761 in words is "fifty-three million, one hundred ninety-seven thousand, seven hundred sixty-one".