51238563 has 8 divisors (see below), whose sum is σ = 70674000. Its totient is φ = 32981088.

The previous prime is 51238559. The next prime is 51238589. The reversal of 51238563 is 36583215.

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

It is not a de Polignac number, because 51238563 - 2² = 51238559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51238513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294388 + ... + 294561.

It is an arithmetic number, because the mean of its divisors is an integer number (8834250).

Almost surely, 2^51238563 is an apocalyptic number.

51238563 is a deficient number, since it is larger than the sum of its proper divisors (19435437).

51238563 is a wasteful number, since it uses less digits than its factorization.

51238563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588981.

The product of its digits is 21600, while the sum is 33.

The square root of 51238563 is about 7158.1116923390. Note that the first 3 decimals coincide. The cubic root of 51238563 is about 371.4203091216.

The spelling of 51238563 in words is "fifty-one million, two hundred thirty-eight thousand, five hundred sixty-three".