253561166 has 8 divisors (see below), whose sum is σ = 382003320. Its totient is φ = 126226728.

The previous prime is 253561157. The next prime is 253561199. The reversal of 253561166 is 661165352.

253561166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276356 + ... + 277271.

It is an arithmetic number, because the mean of its divisors is an integer number (47750415).

Almost surely, 2^253561166 is an apocalyptic number.

253561166 is a deficient number, since it is larger than the sum of its proper divisors (128442154).

253561166 is a wasteful number, since it uses less digits than its factorization.

253561166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553858.

The product of its digits is 32400, while the sum is 35.

The square root of 253561166 is about 15923.6040518471. The cubic root of 253561166 is about 632.9376254502.

The spelling of 253561166 in words is "two hundred fifty-three million, five hundred sixty-one thousand, one hundred sixty-six".