5621751772 has 72 divisors (see below), whose sum is σ = 12363069264. Its totient is φ = 2217051648.

The previous prime is 5621751739. The next prime is 5621751829. The reversal of 5621751772 is 2771571265.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 855403 + ... + 861949.

Almost surely, 2^5621751772 is an apocalyptic number.

5621751772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5621751772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6181534632).

5621751772 is an abundant number, since it is smaller than the sum of its proper divisors (6741317492).

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

5621751772 is a wasteful number, since it uses less digits than its factorization.

5621751772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6915 (or 6906 counting only the distinct ones).

The product of its digits is 205800, while the sum is 43.

The square root of 5621751772 is about 74978.3420195459. The cubic root of 5621751772 is about 1778.1042574283.

The spelling of 5621751772 in words is "five billion, six hundred twenty-one million, seven hundred fifty-one thousand, seven hundred seventy-two".