2521045427 has 4 divisors (see below), whose sum is σ = 2524376496. Its totient is φ = 2517714360.

The previous prime is 2521045411. The next prime is 2521045451. The reversal of 2521045427 is 7245401252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521045427 - 2⁴ = 2521045411 is a prime.

It is a super-2 number, since 2×2521045427² = 12711340089995224658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2521045393 and 2521045402.

It is not an unprimeable number, because it can be changed into a prime (2521045127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664399 + ... + 1665912.

It is an arithmetic number, because the mean of its divisors is an integer number (631094124).

Almost surely, 2^2521045427 is an apocalyptic number.

2521045427 is a deficient number, since it is larger than the sum of its proper divisors (3331069).

2521045427 is an equidigital number, since it uses as much as digits as its factorization.

2521045427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331068.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 2521045427 is about 50210.0132144974. The cubic root of 2521045427 is about 1361.0065765821.

Adding to 2521045427 its reverse (7245401252), we get a palindrome (9766446679).

The spelling of 2521045427 in words is "two billion, five hundred twenty-one million, forty-five thousand, four hundred twenty-seven".