2151597100 has 72 divisors (see below), whose sum is σ = 4892686848. Its totient is φ = 819720000.

The previous prime is 2151597089. The next prime is 2151597113. The reversal of 2151597100 is 17951512.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 575437 + ... + 579163.

It is an arithmetic number, because the mean of its divisors is an integer number (67953984).

Almost surely, 2^2151597100 is an apocalyptic number.

2151597100 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 2151597100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2446343424).

2151597100 is an abundant number, since it is smaller than the sum of its proper divisors (2741089748).

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

2151597100 is a wasteful number, since it uses less digits than its factorization.

2151597100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015 (or 4008 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 31.

The square root of 2151597100 is about 46385.3112525937. The cubic root of 2151597100 is about 1290.9823857112.

The spelling of 2151597100 in words is "two billion, one hundred fifty-one million, five hundred ninety-seven thousand, one hundred".