51250051 has 4 divisors (see below), whose sum is σ = 51264400. Its totient is φ = 51235704.

The previous prime is 51250013. The next prime is 51250057. The reversal of 51250051 is 15005215.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 51250051 - 2⁷ = 51249923 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (51250057) 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, 2890 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (12816100).

Almost surely, 2^51250051 is an apocalyptic number.

51250051 is a deficient number, since it is larger than the sum of its proper divisors (14349).

51250051 is an equidigital number, since it uses as much as digits as its factorization.

51250051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14348.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 51250051 is about 7158.9140936318. The cubic root of 51250051 is about 371.4480652843.

Adding to 51250051 its reverse (15005215), we get a palindrome (66255266).

The spelling of 51250051 in words is "fifty-one million, two hundred fifty thousand, fifty-one".