51963397 has 8 divisors (see below), whose sum is σ = 52617344. Its totient is φ = 51312528.

The previous prime is 51963367. The next prime is 51963403. The reversal of 51963397 is 79336915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51963397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51963367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62728 + ... + 63550.

It is an arithmetic number, because the mean of its divisors is an integer number (6577168).

Almost surely, 2^51963397 is an apocalyptic number.

It is an amenable number.

51963397 is a deficient number, since it is larger than the sum of its proper divisors (653947).

51963397 is a wasteful number, since it uses less digits than its factorization.

51963397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1539.

The product of its digits is 153090, while the sum is 43.

The square root of 51963397 is about 7208.5641427402. The cubic root of 51963397 is about 373.1635174930.

The spelling of 51963397 in words is "fifty-one million, nine hundred sixty-three thousand, three hundred ninety-seven".