51202241 has 4 divisors (see below), whose sum is σ = 52041684. Its totient is φ = 50362800.

The previous prime is 51202231. The next prime is 51202247. The reversal of 51202241 is 14220215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14220215 = 5 ⋅2844043.

It can be written as a sum of positive squares in 2 ways, for example, as 7311616 + 43890625 = 2704^2 + 6625^2 .

It is a cyclic number.

It is not a de Polignac number, because 51202241 - 2¹⁰ = 51201217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51202247) 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, 419630 + ... + 419751.

It is an arithmetic number, because the mean of its divisors is an integer number (13010421).

Almost surely, 2^51202241 is an apocalyptic number.

It is an amenable number.

51202241 is a deficient number, since it is larger than the sum of its proper divisors (839443).

51202241 is an equidigital number, since it uses as much as digits as its factorization.

51202241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839442.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 51202241 is about 7155.5741209214. The cubic root of 51202241 is about 371.3325242144.

Adding to 51202241 its reverse (14220215), we get a palindrome (65422456).

The spelling of 51202241 in words is "fifty-one million, two hundred two thousand, two hundred forty-one".