2521792066 has 4 divisors (see below), whose sum is σ = 3782688102. Its totient is φ = 1260896032.

The previous prime is 2521792057. The next prime is 2521792067. The reversal of 2521792066 is 6602971252.

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., 2496501225 + 25290841 = 49965^2 + 5029^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2521792067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630448015 + ... + 630448018.

Almost surely, 2^2521792066 is an apocalyptic number.

2521792066 is a deficient number, since it is larger than the sum of its proper divisors (1260896036).

2521792066 is a wasteful number, since it uses less digits than its factorization.

2521792066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260896035.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 2521792066 is about 50217.4478244365. The cubic root of 2521792066 is about 1361.1409230027.

The spelling of 2521792066 in words is "two billion, five hundred twenty-one million, seven hundred ninety-two thousand, sixty-six".