2521260706 has 4 divisors (see below), whose sum is σ = 3781891062. Its totient is φ = 1260630352.

The previous prime is 2521260673. The next prime is 2521260743. The reversal of 2521260706 is 6070621252.

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

It can be written as a sum of positive squares in only one way, i.e., 2479542025 + 41718681 = 49795^2 + 6459^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630315175 + ... + 630315178.

Almost surely, 2^2521260706 is an apocalyptic number.

2521260706 is a deficient number, since it is larger than the sum of its proper divisors (1260630356).

2521260706 is a wasteful number, since it uses less digits than its factorization.

2521260706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260630355.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2521260706 is about 50212.1569542676. The cubic root of 2521260706 is about 1361.0453155106.

Adding to 2521260706 its reverse (6070621252), we get a palindrome (8591881958).

The spelling of 2521260706 in words is "two billion, five hundred twenty-one million, two hundred sixty thousand, seven hundred six".