2521131166 has 8 divisors (see below), whose sum is σ = 3980733480. Its totient is φ = 1194220008.

The previous prime is 2521131149. The next prime is 2521131167. The reversal of 2521131166 is 6611311252.

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

It is a super-3 number, since 3×2521131166³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521131167) 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, 33172741 + ... + 33172816.

It is an arithmetic number, because the mean of its divisors is an integer number (497591685).

Almost surely, 2^2521131166 is an apocalyptic number.

2521131166 is a deficient number, since it is larger than the sum of its proper divisors (1459602314).

2521131166 is a wasteful number, since it uses less digits than its factorization.

2521131166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66345578.

The product of its digits is 2160, while the sum is 28.

The square root of 2521131166 is about 50210.8670110366. The cubic root of 2521131166 is about 1361.0220053693.

The spelling of 2521131166 in words is "two billion, five hundred twenty-one million, one hundred thirty-one thousand, one hundred sixty-six".