245536553 has 2 divisors, whose sum is σ = 245536554. Its totient is φ = 245536552.

The previous prime is 245536549. The next prime is 245536573. The reversal of 245536553 is 355635542.

245536553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144192064 + 101344489 = 12008^2 + 10067^2 .

It is a cyclic number.

It is not a de Polignac number, because 245536553 - 2² = 245536549 is a prime.

It is not a weakly prime, because it can be changed into another prime (245536513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122768276 + 122768277.

It is an arithmetic number, because the mean of its divisors is an integer number (122768277).

Almost surely, 2^245536553 is an apocalyptic number.

It is an amenable number.

245536553 is a deficient number, since it is larger than the sum of its proper divisors (1).

245536553 is an equidigital number, since it uses as much as digits as its factorization.

245536553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270000, while the sum is 38.

The square root of 245536553 is about 15669.6060256791. The cubic root of 245536553 is about 626.1889287766.

The spelling of 245536553 in words is "two hundred forty-five million, five hundred thirty-six thousand, five hundred fifty-three".