2151552 has 64 divisors (see below), whose sum is σ = 6168960. Its totient is φ = 660480.

The previous prime is 2151533. The next prime is 2151563. The reversal of 2151552 is 2551512.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4777 + ... + 5207.

It is an arithmetic number, because the mean of its divisors is an integer number (96390).

2^2151552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3084480).

2151552 is an abundant number, since it is smaller than the sum of its proper divisors (4017408).

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

2151552 is a wasteful number, since it uses less digits than its factorization.

2151552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 449 counting only the distinct ones).

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

The square root of 2151552 is about 1466.8169619963. The cubic root of 2151552 is about 129.0973365480.

The spelling of 2151552 in words is "two million, one hundred fifty-one thousand, five hundred fifty-two".