51722026201 has 4 divisors (see below), whose sum is σ = 51724908004. Its totient is φ = 51719144400.

The previous prime is 51722026183. The next prime is 51722026207. The reversal of 51722026201 is 10262022715.

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 30921464025 + 20800562176 = 175845^2 + 144224^2 .

It is a cyclic number.

It is not a de Polignac number, because 51722026201 - 2¹³ = 51722018009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51722026201.

It is not an unprimeable number, because it can be changed into a prime (51722026207) 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, 1413810 + ... + 1449931.

It is an arithmetic number, because the mean of its divisors is an integer number (12931227001).

Almost surely, 2^51722026201 is an apocalyptic number.

It is an amenable number.

51722026201 is a deficient number, since it is larger than the sum of its proper divisors (2881803).

51722026201 is a wasteful number, since it uses less digits than its factorization.

51722026201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881802.

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 51722026201 its reverse (10262022715), we get a palindrome (61984048916).

The spelling of 51722026201 in words is "fifty-one billion, seven hundred twenty-two million, twenty-six thousand, two hundred one".