240511161 has 16 divisors (see below), whose sum is σ = 365045760. Its totient is φ = 139426320.

The previous prime is 240511157. The next prime is 240511213. The reversal of 240511161 is 161115042.

It is not a de Polignac number, because 240511161 - 2² = 240511157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240511261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157681 + ... + 159198.

It is an arithmetic number, because the mean of its divisors is an integer number (22815360).

Almost surely, 2^240511161 is an apocalyptic number.

It is an amenable number.

240511161 is a deficient number, since it is larger than the sum of its proper divisors (124534599).

240511161 is a wasteful number, since it uses less digits than its factorization.

240511161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316916.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 240511161 is about 15508.4222601785. The cubic root of 240511161 is about 621.8873816916.

The spelling of 240511161 in words is "two hundred forty million, five hundred eleven thousand, one hundred sixty-one".