53915261 has 4 divisors (see below), whose sum is σ = 53937024. Its totient is φ = 53893500.

The previous prime is 53915227. The next prime is 53915273. The reversal of 53915261 is 16251935.

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 a de Polignac number, because none of the positive numbers 2^k-53915261 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 (53915461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6605 + ... + 12306.

It is an arithmetic number, because the mean of its divisors is an integer number (13484256).

Almost surely, 2^53915261 is an apocalyptic number.

It is an amenable number.

53915261 is a deficient number, since it is larger than the sum of its proper divisors (21763).

53915261 is a wasteful number, since it uses less digits than its factorization.

53915261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762.

The product of its digits is 8100, while the sum is 32.

The square root of 53915261 is about 7342.7012059596. The cubic root of 53915261 is about 377.7784995148.

The spelling of 53915261 in words is "fifty-three million, nine hundred fifteen thousand, two hundred sixty-one".