2154517266 has 32 divisors (see below), whose sum is σ = 4702457088. Its totient is φ = 652649040.

The previous prime is 2154517259. The next prime is 2154517283. The reversal of 2154517266 is 6627154512.

It is a super-2 number, since 2×2154517266² = 9283889298984229512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) 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 in 15 ways as a sum of consecutive naturals, for example, 293841 + ... + 301083.

It is an arithmetic number, because the mean of its divisors is an integer number (146951784).

Almost surely, 2^2154517266 is an apocalyptic number.

2154517266 is an abundant number, since it is smaller than the sum of its proper divisors (2547939822).

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

2154517266 is a wasteful number, since it uses less digits than its factorization.

2154517266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11766.

The product of its digits is 100800, while the sum is 39.

The square root of 2154517266 is about 46416.7778502558. Note that the first 3 decimals coincide. The cubic root of 2154517266 is about 1291.5661658015.

The spelling of 2154517266 in words is "two billion, one hundred fifty-four million, five hundred seventeen thousand, two hundred sixty-six".