242797553 has 8 divisors (see below), whose sum is σ = 257311080. Its totient is φ = 228309760.

The previous prime is 242797427. The next prime is 242797603. The reversal of 242797553 is 355797242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82319329 + 160478224 = 9073^2 + 12668^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242797553 - 2⁸ = 242797297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242797153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15083 + ... + 26703.

It is an arithmetic number, because the mean of its divisors is an integer number (32163885).

Almost surely, 2^242797553 is an apocalyptic number.

It is an amenable number.

242797553 is a deficient number, since it is larger than the sum of its proper divisors (14513527).

242797553 is a wasteful number, since it uses less digits than its factorization.

242797553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12867.

The product of its digits is 529200, while the sum is 44.

The square root of 242797553 is about 15581.9624245472. The cubic root of 242797553 is about 623.8518038179.

The spelling of 242797553 in words is "two hundred forty-two million, seven hundred ninety-seven thousand, five hundred fifty-three".