53312361 has 4 divisors (see below), whose sum is σ = 71083152. Its totient is φ = 35541572.

The previous prime is 53312339. The next prime is 53312381. The reversal of 53312361 is 16321335.

It is a happy number.

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 53312361 - 2⁶ = 53312297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53312381) 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, 8885391 + ... + 8885396.

It is an arithmetic number, because the mean of its divisors is an integer number (17770788).

Almost surely, 2^53312361 is an apocalyptic number.

It is an amenable number.

53312361 is a deficient number, since it is larger than the sum of its proper divisors (17770791).

53312361 is a wasteful number, since it uses less digits than its factorization.

53312361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17770790.

The product of its digits is 1620, while the sum is 24.

The square root of 53312361 is about 7301.5314147102. The cubic root of 53312361 is about 376.3650657806.

Adding to 53312361 its reverse (16321335), we get a palindrome (69633696).

The spelling of 53312361 in words is "fifty-three million, three hundred twelve thousand, three hundred sixty-one".