51250563 has 80 divisors (see below), whose sum is σ = 100013760. Its totient is φ = 25380864.

The previous prime is 51250541. The next prime is 51250567. The reversal of 51250563 is 36505215.

51250563 is a `hidden beast` number, since 51 + 2 + 50 + 563 = 666.

It is not a de Polignac number, because 51250563 - 2¹³ = 51242371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (51250567) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 125103 + ... + 125511.

It is an arithmetic number, because the mean of its divisors is an integer number (1250172).

Almost surely, 2^51250563 is an apocalyptic number.

51250563 is a deficient number, since it is larger than the sum of its proper divisors (48763197).

51250563 is a wasteful number, since it uses less digits than its factorization.

51250563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 51250563 is about 7158.9498531558. The cubic root of 51250563 is about 371.4493022312.

Adding to 51250563 its reverse (36505215), we get a palindrome (87755778).

The spelling of 51250563 in words is "fifty-one million, two hundred fifty thousand, five hundred sixty-three".