242202551 has 2 divisors, whose sum is σ = 242202552. Its totient is φ = 242202550.

The previous prime is 242202533. The next prime is 242202599. The reversal of 242202551 is 155202242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242202551 - 2¹⁰ = 242201527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242202511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121101275 + 121101276.

It is an arithmetic number, because the mean of its divisors is an integer number (121101276).

Almost surely, 2^242202551 is an apocalyptic number.

242202551 is a deficient number, since it is larger than the sum of its proper divisors (1).

242202551 is an equidigital number, since it uses as much as digits as its factorization.

242202551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 242202551 is about 15562.8580601379. The cubic root of 242202551 is about 623.3417812411.

Adding to 242202551 its reverse (155202242), we get a palindrome (397404793).

The spelling of 242202551 in words is "two hundred forty-two million, two hundred two thousand, five hundred fifty-one".