51872041 has 4 divisors (see below), whose sum is σ = 55862212. Its totient is φ = 47881872.

The previous prime is 51872027. The next prime is 51872047. The reversal of 51872041 is 14027815.

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 6780816 + 45091225 = 2604^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 51872041 - 2⁹ = 51871529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51872047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995066 + ... + 1995091.

It is an arithmetic number, because the mean of its divisors is an integer number (13965553).

Almost surely, 2^51872041 is an apocalyptic number.

It is an amenable number.

51872041 is a deficient number, since it is larger than the sum of its proper divisors (3990171).

51872041 is a wasteful number, since it uses less digits than its factorization.

51872041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990170.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 51872041 is about 7202.2247257358. The cubic root of 51872041 is about 372.9447049831.

Adding to 51872041 its reverse (14027815), we get a palindrome (65899856).

The spelling of 51872041 in words is "fifty-one million, eight hundred seventy-two thousand, forty-one".