53318361 has 4 divisors (see below), whose sum is σ = 71091152. Its totient is φ = 35545572.

The previous prime is 53318339. The next prime is 53318381. The reversal of 53318361 is 16381335.

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 not a de Polignac number, because 53318361 - 2⁶ = 53318297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53318311) 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, 8886391 + ... + 8886396.

It is an arithmetic number, because the mean of its divisors is an integer number (17772788).

Almost surely, 2^53318361 is an apocalyptic number.

It is an amenable number.

53318361 is a deficient number, since it is larger than the sum of its proper divisors (17772791).

53318361 is a wasteful number, since it uses less digits than its factorization.

53318361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17772790.

The product of its digits is 6480, while the sum is 30.

The square root of 53318361 is about 7301.9422758606. The cubic root of 53318361 is about 376.3791844930.

Adding to 53318361 its reverse (16381335), we get a palindrome (69699696).

The spelling of 53318361 in words is "fifty-three million, three hundred eighteen thousand, three hundred sixty-one".