51563051 has 4 divisors (see below), whose sum is σ = 51581712. Its totient is φ = 51544392.

The previous prime is 51563047. The next prime is 51563053. The reversal of 51563051 is 15036515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51563051 - 2² = 51563047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51563051.

It is not an unprimeable number, because it can be changed into a prime (51563053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4271 + ... + 11016.

It is an arithmetic number, because the mean of its divisors is an integer number (12895428).

Almost surely, 2^51563051 is an apocalyptic number.

51563051 is a deficient number, since it is larger than the sum of its proper divisors (18661).

51563051 is a wasteful number, since it uses less digits than its factorization.

51563051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18660.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 51563051 is about 7180.7416747854. The cubic root of 51563051 is about 372.2027140226.

Adding to 51563051 its reverse (15036515), we get a palindrome (66599566).

The spelling of 51563051 in words is "fifty-one million, five hundred sixty-three thousand, fifty-one".