2152508582449 has 3 divisors (see below), whose sum is σ = 2152510049593. Its totient is φ = 2152507115306.

The previous prime is 2152508582447. The next prime is 2152508582473. The reversal of 2152508582449 is 9442858052512.

It is a happy number.

The square root of 2152508582449 is 1467143.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 2152508582449 - 2¹ = 2152508582447 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2152508582449.

It is not an unprimeable number, because it can be changed into a prime (2152508582443) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 733572 + ... + 2200714.

Almost surely, 2^{2152508582449} is an apocalyptic number.

2152508582449 is the 1467143-rd square number.

2152508582449 is the 733572-nd centered octagonal number.

It is an amenable number.

2152508582449 is a deficient number, since it is larger than the sum of its proper divisors (1467144).

2152508582449 is an frugal number, since it uses more digits than its factorization.

2152508582449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934286 (or 1467143 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 55.

The spelling of 2152508582449 in words is "two trillion, one hundred fifty-two billion, five hundred eight million, five hundred eighty-two thousand, four hundred forty-nine".