53161291 has 4 divisors (see below), whose sum is σ = 53210592. Its totient is φ = 53111992.

The previous prime is 53161253. The next prime is 53161307. The reversal of 53161291 is 19216135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53161291 is a prime.

It is a super-2 number, since 2×53161291² = 5652245721573362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53161231) 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, 22996 + ... + 25201.

It is an arithmetic number, because the mean of its divisors is an integer number (13302648).

Almost surely, 2^53161291 is an apocalyptic number.

53161291 is a deficient number, since it is larger than the sum of its proper divisors (49301).

53161291 is a wasteful number, since it uses less digits than its factorization.

53161291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49300.

The product of its digits is 1620, while the sum is 28.

The square root of 53161291 is about 7291.1789855962. The cubic root of 53161291 is about 376.0092304773.

The spelling of 53161291 in words is "fifty-three million, one hundred sixty-one thousand, two hundred ninety-one".