51063565 has 32 divisors (see below), whose sum is σ = 73658880. Its totient is φ = 33225984.

The previous prime is 51063559. The next prime is 51063619. The reversal of 51063565 is 56536015.

It is not a de Polignac number, because 51063565 - 2⁵ = 51063533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184207 + ... + 184483.

It is an arithmetic number, because the mean of its divisors is an integer number (2301840).

Almost surely, 2^51063565 is an apocalyptic number.

It is an amenable number.

51063565 is a deficient number, since it is larger than the sum of its proper divisors (22595315).

51063565 is a wasteful number, since it uses less digits than its factorization.

51063565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541.

The product of its (nonzero) digits is 13500, while the sum is 31.

The square root of 51063565 is about 7145.8774828568. The cubic root of 51063565 is about 370.9969824637.

The spelling of 51063565 in words is "fifty-one million, sixty-three thousand, five hundred sixty-five".