5226000721 has 4 divisors (see below), whose sum is σ = 5226446500. Its totient is φ = 5225554944.

The previous prime is 5226000679. The next prime is 5226000757. The reversal of 5226000721 is 1270006225.

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 1992372496 + 3233628225 = 44636^2 + 56865^2 .

It is a 4-Lehmer number, since φ(5226000721) divides (5226000721-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5226000721 is a prime.

It is a super-2 number, since 2×5226000721² = 54622167071785039682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5226000761) 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, 204816 + ... + 228913.

It is an arithmetic number, because the mean of its divisors is an integer number (1306611625).

Almost surely, 2^5226000721 is an apocalyptic number.

It is an amenable number.

5226000721 is a deficient number, since it is larger than the sum of its proper divisors (445779).

5226000721 is a wasteful number, since it uses less digits than its factorization.

5226000721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445778.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 5226000721 is about 72291.0832744952. The cubic root of 5226000721 is about 1735.3609550561.

Adding to 5226000721 its reverse (1270006225), we get a palindrome (6496006946).

The spelling of 5226000721 in words is "five billion, two hundred twenty-six million, seven hundred twenty-one", and thus it is an aban number.