240553823 has 2 divisors, whose sum is σ = 240553824. Its totient is φ = 240553822.

The previous prime is 240553801. The next prime is 240553829. The reversal of 240553823 is 328355042.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240553823 - 2¹⁴ = 240537439 is a prime.

It is a super-2 number, since 2×240553823² = 115732283519830658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 240553823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240553829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120276911 + 120276912.

It is an arithmetic number, because the mean of its divisors is an integer number (120276912).

Almost surely, 2^240553823 is an apocalyptic number.

240553823 is a deficient number, since it is larger than the sum of its proper divisors (1).

240553823 is an equidigital number, since it uses as much as digits as its factorization.

240553823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 240553823 is about 15509.7976453595. The cubic root of 240553823 is about 621.9241497579.

The spelling of 240553823 in words is "two hundred forty million, five hundred fifty-three thousand, eight hundred twenty-three".