245716553 has 2 divisors, whose sum is σ = 245716554. Its totient is φ = 245716552.

The previous prime is 245716547. The next prime is 245716621. The reversal of 245716553 is 355617542.

It is a happy number.

245716553 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., 166203664 + 79512889 = 12892^2 + 8917^2 .

It is a cyclic number.

It is not a de Polignac number, because 245716553 - 2⁶ = 245716489 is a prime.

It is not a weakly prime, because it can be changed into another prime (245716753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122858276 + 122858277.

It is an arithmetic number, because the mean of its divisors is an integer number (122858277).

Almost surely, 2^245716553 is an apocalyptic number.

It is an amenable number.

245716553 is a deficient number, since it is larger than the sum of its proper divisors (1).

245716553 is an equidigital number, since it uses as much as digits as its factorization.

245716553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126000, while the sum is 38.

The square root of 245716553 is about 15675.3485766665. The cubic root of 245716553 is about 626.3419086811.

The spelling of 245716553 in words is "two hundred forty-five million, seven hundred sixteen thousand, five hundred fifty-three".