5251841820 has 48 divisors (see below), whose sum is σ = 16339065120. Its totient is φ = 1400491008.

The previous prime is 5251841783. The next prime is 5251841821. The reversal of 5251841820 is 281481525.

5251841820 is a `hidden beast` number, since 525 + 18 + 41 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251841821) 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, 4862277 + ... + 4863356.

It is an arithmetic number, because the mean of its divisors is an integer number (340397190).

Almost surely, 2^5251841820 is an apocalyptic number.

It is an amenable number.

5251841820 is an abundant number, since it is smaller than the sum of its proper divisors (11087223300).

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

5251841820 is a wasteful number, since it uses less digits than its factorization.

5251841820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725651 (or 9725643 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 5251841820 is about 72469.5923819087. The cubic root of 5251841820 is about 1738.2165436134.

The spelling of 5251841820 in words is "five billion, two hundred fifty-one million, eight hundred forty-one thousand, eight hundred twenty".