5621597400 has 192 divisors, whose sum is σ = 18513100800. Its totient is φ = 1406248960.

The previous prime is 5621597357. The next prime is 5621597407. The reversal of 5621597400 is 47951265.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5621597407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3905881 + ... + 3907319.

It is an arithmetic number, because the mean of its divisors is an integer number (96422400).

Almost surely, 2^5621597400 is an apocalyptic number.

5621597400 is a gapful number since it is divisible by the number (50) 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 5621597400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9256550400).

5621597400 is an abundant number, since it is smaller than the sum of its proper divisors (12891503400).

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

5621597400 is a wasteful number, since it uses less digits than its factorization.

5621597400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 5621597400 is about 74977.3125685364. The cubic root of 5621597400 is about 1778.0879818358.

The spelling of 5621597400 in words is "five billion, six hundred twenty-one million, five hundred ninety-seven thousand, four hundred".