2152511452 has 72 divisors (see below), whose sum is σ = 4738688864. Its totient is φ = 833113728.

The previous prime is 2152511353. The next prime is 2152511477. The reversal of 2152511452 is 2541152512.

It is a super-2 number, since 2×2152511452² = 9266611101982296608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 2152511452.

It is a congruent number.

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, 802738 + ... + 805414.

Almost surely, 2^2152511452 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 2152511452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369344432).

2152511452 is an abundant number, since it is smaller than the sum of its proper divisors (2586177412).

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

2152511452 is a wasteful number, since it uses less digits than its factorization.

2152511452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795 (or 2746 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 2152511452 is about 46395.1662568419. The cubic root of 2152511452 is about 1291.1652336298.

Adding to 2152511452 its reverse (2541152512), we get a palindrome (4693663964).

The spelling of 2152511452 in words is "two billion, one hundred fifty-two million, five hundred eleven thousand, four hundred fifty-two".