2521336045 has 8 divisors (see below), whose sum is σ = 3203580024. Its totient is φ = 1898417664.

The previous prime is 2521336039. The next prime is 2521336093. The reversal of 2521336045 is 5406331252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 364848201 + 2156487844 = 19101^2 + 46438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2521336045 - 2¹⁵ = 2521303277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521335998 and 2521336016.

It is a congruent number.

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, 14831304 + ... + 14831473.

It is an arithmetic number, because the mean of its divisors is an integer number (400447503).

Almost surely, 2^2521336045 is an apocalyptic number.

It is an amenable number.

2521336045 is a deficient number, since it is larger than the sum of its proper divisors (682243979).

2521336045 is a wasteful number, since it uses less digits than its factorization.

2521336045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29662799.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2521336045 is about 50212.9071554317. The cubic root of 2521336045 is about 1361.0588720581.

Adding to 2521336045 its reverse (5406331252), we get a palindrome (7927667297).

The spelling of 2521336045 in words is "two billion, five hundred twenty-one million, three hundred thirty-six thousand, forty-five".