245242553 has 2 divisors, whose sum is σ = 245242554. Its totient is φ = 245242552.

The previous prime is 245242541. The next prime is 245242577. The reversal of 245242553 is 355242542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205148329 + 40094224 = 14323^2 + 6332^2 .

It is a cyclic number.

It is not a de Polignac number, because 245242553 - 2⁶ = 245242489 is a prime.

It is not a weakly prime, because it can be changed into another prime (245242513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122621276 + 122621277.

It is an arithmetic number, because the mean of its divisors is an integer number (122621277).

Almost surely, 2^245242553 is an apocalyptic number.

It is an amenable number.

245242553 is a deficient number, since it is larger than the sum of its proper divisors (1).

245242553 is an equidigital number, since it uses as much as digits as its factorization.

245242553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48000, while the sum is 32.

The square root of 245242553 is about 15660.2219971493. The cubic root of 245242553 is about 625.9389007317.

The spelling of 245242553 in words is "two hundred forty-five million, two hundred forty-two thousand, five hundred fifty-three".