2057221500 has 192 divisors, whose sum is σ = 6184563840. Its totient is φ = 531148800.

The previous prime is 2057221489. The next prime is 2057221501. The reversal of 2057221500 is 51227502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057221501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8983386 + ... + 8983614.

It is an arithmetic number, because the mean of its divisors is an integer number (32211270).

Almost surely, 2^2057221500 is an apocalyptic number.

2057221500 is a gapful number since it is divisible by the number (20) 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 2057221500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3092281920).

2057221500 is an abundant number, since it is smaller than the sum of its proper divisors (4127342340).

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

2057221500 is a wasteful number, since it uses less digits than its factorization.

2057221500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 2057221500 is about 45356.6037088316. The cubic root of 2057221500 is about 1271.8240060489.

The spelling of 2057221500 in words is "two billion, fifty-seven million, two hundred twenty-one thousand, five hundred".