51563005 has 16 divisors (see below), whose sum is σ = 66855600. Its totient is φ = 37951488.

The previous prime is 51562981. The next prime is 51563009. The reversal of 51563005 is 50036515.

It can be written as a sum of positive squares in 8 ways, for example, as 326041 + 51236964 = 571^2 + 7158^2 .

It is a cyclic number.

It is not a de Polignac number, because 51563005 - 2⁷ = 51562877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51563009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21549 + ... + 23821.

It is an arithmetic number, because the mean of its divisors is an integer number (4178475).

Almost surely, 2^51563005 is an apocalyptic number.

It is an amenable number.

51563005 is a deficient number, since it is larger than the sum of its proper divisors (15292595).

51563005 is a wasteful number, since it uses less digits than its factorization.

51563005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 51563005 is about 7180.7384717729. The cubic root of 51563005 is about 372.2026033404.

The spelling of 51563005 in words is "fifty-one million, five hundred sixty-three thousand, five".