51443252201 has 4 divisors (see below), whose sum is σ = 56119911504. Its totient is φ = 46766592900.

The previous prime is 51443252173. The next prime is 51443252227. The reversal of 51443252201 is 10225234415.

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 51443252201 - 2²² = 51439057897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51443252251) 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, 2338329635 + ... + 2338329656.

It is an arithmetic number, because the mean of its divisors is an integer number (14029977876).

Almost surely, 2^51443252201 is an apocalyptic number.

It is an amenable number.

51443252201 is a deficient number, since it is larger than the sum of its proper divisors (4676659303).

51443252201 is a wasteful number, since it uses less digits than its factorization.

51443252201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676659302.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 51443252201 its reverse (10225234415), we get a palindrome (61668486616).

The spelling of 51443252201 in words is "fifty-one billion, four hundred forty-three million, two hundred fifty-two thousand, two hundred one".