5211251722 has 4 divisors (see below), whose sum is σ = 7816877586. Its totient is φ = 2605625860.

The previous prime is 5211251719. The next prime is 5211251761. The reversal of 5211251722 is 2271521125.

It is a Cunningham number, because it is equal to 72189²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5211251721 + 1 = 72189^2 + 1^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302812929 + ... + 1302812932.

Almost surely, 2^5211251722 is an apocalyptic number.

5211251722 is a deficient number, since it is larger than the sum of its proper divisors (2605625864).

5211251722 is a wasteful number, since it uses less digits than its factorization.

5211251722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2605625863.

The product of its digits is 2800, while the sum is 28.

The square root of 5211251722 is about 72189.0000069263. Note that the first 5 decimals coincide. The cubic root of 5211251722 is about 1733.7268850542.

Adding to 5211251722 its reverse (2271521125), we get a palindrome (7482772847).

The spelling of 5211251722 in words is "five billion, two hundred eleven million, two hundred fifty-one thousand, seven hundred twenty-two".