53115761 has 4 divisors (see below), whose sum is σ = 53631552. Its totient is φ = 52599972.

The previous prime is 53115737. The next prime is 53115847. The reversal of 53115761 is 16751135.

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-53115761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53115661) 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, 257741 + ... + 257946.

It is an arithmetic number, because the mean of its divisors is an integer number (13407888).

Almost surely, 2^53115761 is an apocalyptic number.

It is an amenable number.

53115761 is a deficient number, since it is larger than the sum of its proper divisors (515791).

53115761 is a wasteful number, since it uses less digits than its factorization.

53115761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515790.

The product of its digits is 3150, while the sum is 29.

The square root of 53115761 is about 7288.0560508273. The cubic root of 53115761 is about 375.9018554202.

Adding to 53115761 its reverse (16751135), we get a palindrome (69866896).

The spelling of 53115761 in words is "fifty-three million, one hundred fifteen thousand, seven hundred sixty-one".