51496811 has 4 divisors (see below), whose sum is σ = 51604800. Its totient is φ = 51388824.

The previous prime is 51496789. The next prime is 51496813. The reversal of 51496811 is 11869415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51496811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51496813) 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, 53276 + ... + 54233.

It is an arithmetic number, because the mean of its divisors is an integer number (12901200).

Almost surely, 2^51496811 is an apocalyptic number.

51496811 is a deficient number, since it is larger than the sum of its proper divisors (107989).

51496811 is a wasteful number, since it uses less digits than its factorization.

51496811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107988.

The product of its digits is 8640, while the sum is 35.

The square root of 51496811 is about 7176.1278556057. The cubic root of 51496811 is about 372.0432634579.

The spelling of 51496811 in words is "fifty-one million, four hundred ninety-six thousand, eight hundred eleven".