253133166 has 96 divisors (see below), whose sum is σ = 616581504. Its totient is φ = 68299200.

The previous prime is 253133161. The next prime is 253133171. The reversal of 253133166 is 661331352.

It is a happy number.

253133166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253133161) and next prime (253133171).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253133161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 824385 + ... + 824691.

It is an arithmetic number, because the mean of its divisors is an integer number (6422724).

Almost surely, 2^253133166 is an apocalyptic number.

253133166 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 253133166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308290752).

253133166 is an abundant number, since it is smaller than the sum of its proper divisors (363448338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253133166 is a wasteful number, since it uses less digits than its factorization.

253133166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 367 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 253133166 is about 15910.1592072487. The cubic root of 253133166 is about 632.5813013438.

The spelling of 253133166 in words is "two hundred fifty-three million, one hundred thirty-three thousand, one hundred sixty-six".