51244201 has 4 divisors (see below), whose sum is σ = 51264004. Its totient is φ = 51224400.

The previous prime is 51244199. The next prime is 51244217. The reversal of 51244201 is 10244215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10244215 = 5 ⋅2048843.

It can be written as a sum of positive squares in 2 ways, for example, as 49491225 + 1752976 = 7035^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 51244201 - 2¹ = 51244199 is a prime.

It is a super-2 number, since 2×51244201² = 5251936272256802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51244801) 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, 5310 + ... + 11431.

It is an arithmetic number, because the mean of its divisors is an integer number (12816001).

Almost surely, 2^51244201 is an apocalyptic number.

It is an amenable number.

51244201 is a deficient number, since it is larger than the sum of its proper divisors (19803).

51244201 is a wasteful number, since it uses less digits than its factorization.

51244201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19802.

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

The square root of 51244201 is about 7158.5055004519. The cubic root of 51244201 is about 371.4339316147.

Adding to 51244201 its reverse (10244215), we get a palindrome (61488416).

The spelling of 51244201 in words is "fifty-one million, two hundred forty-four thousand, two hundred one".