51245041 has 4 divisors (see below), whose sum is σ = 51278500. Its totient is φ = 51211584.

The previous prime is 51245027. The next prime is 51245053. The reversal of 51245041 is 14054215.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40908816 + 10336225 = 6396^2 + 3215^2 .

It is a cyclic number.

It is not a de Polignac number, because 51245041 - 2¹⁷ = 51113969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51245141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14316 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (12819625).

Almost surely, 2^51245041 is an apocalyptic number.

It is an amenable number.

51245041 is a deficient number, since it is larger than the sum of its proper divisors (33459).

51245041 is a wasteful number, since it uses less digits than its factorization.

51245041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33458.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 51245041 is about 7158.5641716758. The cubic root of 51245041 is about 371.4359611308.

Adding to 51245041 its reverse (14054215), we get a palindrome (65299256).

The spelling of 51245041 in words is "fifty-one million, two hundred forty-five thousand, forty-one".