51663297 has 24 divisors (see below), whose sum is σ = 82900800. Its totient is φ = 28501536.

The previous prime is 51663281. The next prime is 51663307. The reversal of 51663297 is 79236615.

It is not a de Polignac number, because 51663297 - 2⁴ = 51663281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51663247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1797 + ... + 10322.

It is an arithmetic number, because the mean of its divisors is an integer number (3454200).

Almost surely, 2^51663297 is an apocalyptic number.

It is an amenable number.

51663297 is a deficient number, since it is larger than the sum of its proper divisors (31237503).

51663297 is a wasteful number, since it uses less digits than its factorization.

51663297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12165 (or 12158 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 51663297 is about 7187.7184836358. The cubic root of 51663297 is about 372.4437631121.

The spelling of 51663297 in words is "fifty-one million, six hundred sixty-three thousand, two hundred ninety-seven".