51250761 has 12 divisors (see below), whose sum is σ = 74091888. Its totient is φ = 34138104.

The previous prime is 51250729. The next prime is 51250777. The reversal of 51250761 is 16705215.

It is not a de Polignac number, because 51250761 - 2⁵ = 51250729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51250721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16606 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (6174324).

Almost surely, 2^51250761 is an apocalyptic number.

It is an amenable number.

51250761 is a deficient number, since it is larger than the sum of its proper divisors (22841127).

51250761 is a wasteful number, since it uses less digits than its factorization.

51250761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852 (or 4849 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 51250761 is about 7158.9636819864. The cubic root of 51250761 is about 371.4497805795.

Adding to 51250761 its reverse (16705215), we get a palindrome (67955976).

The spelling of 51250761 in words is "fifty-one million, two hundred fifty thousand, seven hundred sixty-one".