53109331 has 4 divisors (see below), whose sum is σ = 57937464. Its totient is φ = 48281200.

The previous prime is 53109299. The next prime is 53109361. The reversal of 53109331 is 13390135.

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

It is not a de Polignac number, because 53109331 - 2⁵ = 53109299 is a prime.

It is a super-2 number, since 2×53109331² = 5641202078535122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53109296 and 53109305.

It is not an unprimeable number, because it can be changed into a prime (53109361) 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, 2414050 + ... + 2414071.

It is an arithmetic number, because the mean of its divisors is an integer number (14484366).

Almost surely, 2^53109331 is an apocalyptic number.

53109331 is a deficient number, since it is larger than the sum of its proper divisors (4828133).

53109331 is a wasteful number, since it uses less digits than its factorization.

53109331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828132.

The product of its (nonzero) digits is 1215, while the sum is 25.

The square root of 53109331 is about 7287.6149047545. The cubic root of 53109331 is about 375.8866863729.

Adding to 53109331 its reverse (13390135), we get a palindrome (66499466).

It can be divided in two parts, 5310 and 9331, that added together give a palindrome (14641).

The spelling of 53109331 in words is "fifty-three million, one hundred nine thousand, three hundred thirty-one".