240155881 has 16 divisors (see below), whose sum is σ = 279404928. Its totient is φ = 202176000.

The previous prime is 240155869. The next prime is 240155891. The reversal of 240155881 is 188551042.

It is a cyclic number.

It is not a de Polignac number, because 240155881 - 2¹³ = 240147689 is a prime.

It is a super-2 number, since 2×240155881² = 115349694357772322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240155831) 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, 91321 + ... + 93913.

It is an arithmetic number, because the mean of its divisors is an integer number (17462808).

Almost surely, 2^240155881 is an apocalyptic number.

It is an amenable number.

240155881 is a deficient number, since it is larger than the sum of its proper divisors (39249047).

240155881 is a wasteful number, since it uses less digits than its factorization.

240155881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 240155881 is about 15496.9636058165. The cubic root of 240155881 is about 621.5810161029.

The spelling of 240155881 in words is "two hundred forty million, one hundred fifty-five thousand, eight hundred eighty-one".