51380201 has 4 divisors (see below), whose sum is σ = 51460752. Its totient is φ = 51299652.

The previous prime is 51380179. The next prime is 51380233. The reversal of 51380201 is 10208315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51380201 - 2¹⁰ = 51379177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51380701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39311 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (12865188).

Almost surely, 2^51380201 is an apocalyptic number.

It is an amenable number.

51380201 is a deficient number, since it is larger than the sum of its proper divisors (80551).

51380201 is an equidigital number, since it uses as much as digits as its factorization.

51380201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80550.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 51380201 is about 7167.9983956471. The cubic root of 51380201 is about 371.7622314758.

Adding to 51380201 its reverse (10208315), we get a palindrome (61588516).

The spelling of 51380201 in words is "fifty-one million, three hundred eighty thousand, two hundred one".