51424201 has 4 divisors (see below), whose sum is σ = 54449172. Its totient is φ = 48399232.

The previous prime is 51424199. The next prime is 51424211. The reversal of 51424201 is 10242415.

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 33582025 + 17842176 = 5795^2 + 4224^2 .

It is a cyclic number.

It is not a de Polignac number, because 51424201 - 2¹ = 51424199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51424211) 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, 1512460 + ... + 1512493.

It is an arithmetic number, because the mean of its divisors is an integer number (13612293).

Almost surely, 2^51424201 is an apocalyptic number.

It is an amenable number.

51424201 is a deficient number, since it is larger than the sum of its proper divisors (3024971).

51424201 is a wasteful number, since it uses less digits than its factorization.

51424201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024970.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 51424201 is about 7171.0669359587. The cubic root of 51424201 is about 371.8683220890.

Adding to 51424201 its reverse (10242415), we get a palindrome (61666616).

The spelling of 51424201 in words is "fifty-one million, four hundred twenty-four thousand, two hundred one".