53261331 has 8 divisors (see below), whose sum is σ = 71128464. Its totient is φ = 35450880.

The previous prime is 53261321. The next prime is 53261333. The reversal of 53261331 is 13316235.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53261331 - 2⁶ = 53261267 is a prime.

It is a super-2 number, since 2×53261331² = 5673538759783122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53261333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11926 + ... + 15771.

It is an arithmetic number, because the mean of its divisors is an integer number (8891058).

Almost surely, 2^53261331 is an apocalyptic number.

53261331 is a deficient number, since it is larger than the sum of its proper divisors (17867133).

53261331 is a wasteful number, since it uses less digits than its factorization.

53261331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28341.

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

The square root of 53261331 is about 7298.0361056931. The cubic root of 53261331 is about 376.2449432918.

Adding to 53261331 its reverse (13316235), we get a palindrome (66577566).

The spelling of 53261331 in words is "fifty-three million, two hundred sixty-one thousand, three hundred thirty-one".