51496897 has 4 divisors (see below), whose sum is σ = 54207280. Its totient is φ = 48786516.

The previous prime is 51496883. The next prime is 51496909. The reversal of 51496897 is 79869415.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79869415 = 5 ⋅15973883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51496897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51496897.

It is not an unprimeable number, because it can be changed into a prime (51496397) 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, 1355163 + ... + 1355200.

It is an arithmetic number, because the mean of its divisors is an integer number (13551820).

Almost surely, 2^51496897 is an apocalyptic number.

It is an amenable number.

51496897 is a deficient number, since it is larger than the sum of its proper divisors (2710383).

51496897 is a wasteful number, since it uses less digits than its factorization.

51496897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710382.

The product of its digits is 544320, while the sum is 49.

The square root of 51496897 is about 7176.1338476926. The cubic root of 51496897 is about 372.0434705626.

The spelling of 51496897 in words is "fifty-one million, four hundred ninety-six thousand, eight hundred ninety-seven".