5251243211 has 8 divisors (see below), whose sum is σ = 5288670144. Its totient is φ = 5213897920.

The previous prime is 5251243157. The next prime is 5251243297. The reversal of 5251243211 is 1123421525.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5251243211 - 2²² = 5247048907 is a prime.

It is a super-2 number, since 2×5251243211² = 55151110522147181042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5251243111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111710 + ... + 151596.

It is an arithmetic number, because the mean of its divisors is an integer number (661083768).

Almost surely, 2^5251243211 is an apocalyptic number.

5251243211 is a deficient number, since it is larger than the sum of its proper divisors (37426933).

5251243211 is a wasteful number, since it uses less digits than its factorization.

5251243211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40821.

The product of its digits is 2400, while the sum is 26.

The square root of 5251243211 is about 72465.4621940687. The cubic root of 5251243211 is about 1738.1505000146.

Adding to 5251243211 its reverse (1123421525), we get a palindrome (6374664736).

The spelling of 5251243211 in words is "five billion, two hundred fifty-one million, two hundred forty-three thousand, two hundred eleven".