51853563 has 6 divisors (see below), whose sum is σ = 74899604. Its totient is φ = 34569036.

The previous prime is 51853559. The next prime is 51853573. The reversal of 51853563 is 36535815.

It is not a de Polignac number, because 51853563 - 2² = 51853559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51853573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2880745 + ... + 2880762.

Almost surely, 2^51853563 is an apocalyptic number.

51853563 is a deficient number, since it is larger than the sum of its proper divisors (23046041).

51853563 is a wasteful number, since it uses less digits than its factorization.

51853563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5761513 (or 5761510 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 51853563 is about 7200.9418134019. The cubic root of 51853563 is about 372.9004159302.

The spelling of 51853563 in words is "fifty-one million, eight hundred fifty-three thousand, five hundred sixty-three".