53831261 has 4 divisors (see below), whose sum is σ = 58725024. Its totient is φ = 48937500.

The previous prime is 53831257. The next prime is 53831287. The reversal of 53831261 is 16213835.

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 53831261 - 2² = 53831257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53831761) 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, 2446865 + ... + 2446886.

It is an arithmetic number, because the mean of its divisors is an integer number (14681256).

Almost surely, 2^53831261 is an apocalyptic number.

It is an amenable number.

53831261 is a deficient number, since it is larger than the sum of its proper divisors (4893763).

53831261 is a wasteful number, since it uses less digits than its factorization.

53831261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893762.

The product of its digits is 4320, while the sum is 29.

The square root of 53831261 is about 7336.9790104647. The cubic root of 53831261 is about 377.5822045150.

The spelling of 53831261 in words is "fifty-three million, eight hundred thirty-one thousand, two hundred sixty-one".