5251211000 has 64 divisors (see below), whose sum is σ = 14043257280. Its totient is φ = 1800412800.

The previous prime is 5251210969. The next prime is 5251211003. The reversal of 5251211000 is 1121525.

It is a self number, because there is not a number n which added to its sum of digits gives 5251211000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251211003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368087 + ... + 382086.

It is an arithmetic number, because the mean of its divisors is an integer number (219425895).

Almost surely, 2^5251211000 is an apocalyptic number.

5251211000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5251211000 is an abundant number, since it is smaller than the sum of its proper divisors (8792046280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5251211000 is a wasteful number, since it uses less digits than its factorization.

5251211000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750201 (or 750187 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 5251211000 is about 72465.2399430237. The cubic root of 5251211000 is about 1738.1469460828.

Adding to 5251211000 its reverse (1121525), we get a palindrome (5252332525).

The spelling of 5251211000 in words is "five billion, two hundred fifty-one million, two hundred eleven thousand".