2151552000 has 352 divisors, whose sum is σ = 7725279744. Its totient is φ = 528384000.

The previous prime is 2151551971. The next prime is 2151552017. The reversal of 2151552000 is 2551512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4991785 + ... + 4992215.

Almost surely, 2^2151552000 is an apocalyptic number.

2151552000 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 2151552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3862639872).

2151552000 is an abundant number, since it is smaller than the sum of its proper divisors (5573727744).

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

2151552000 is a wasteful number, since it uses less digits than its factorization.

2151552000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 2151552000 is about 46384.8251047689. The cubic root of 2151552000 is about 1290.9733654796.

The spelling of 2151552000 in words is "two billion, one hundred fifty-one million, five hundred fifty-two thousand".