245101553 has 2 divisors, whose sum is σ = 245101554. Its totient is φ = 245101552.

The previous prime is 245101541. The next prime is 245101561. The reversal of 245101553 is 355101542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242642929 + 2458624 = 15577^2 + 1568^2 .

It is a cyclic number.

It is not a de Polignac number, because 245101553 - 2⁴ = 245101537 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245101523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122550776 + 122550777.

It is an arithmetic number, because the mean of its divisors is an integer number (122550777).

Almost surely, 2^245101553 is an apocalyptic number.

It is an amenable number.

245101553 is a deficient number, since it is larger than the sum of its proper divisors (1).

245101553 is an equidigital number, since it uses as much as digits as its factorization.

245101553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 245101553 is about 15655.7194979982. The cubic root of 245101553 is about 625.8189184209.

The spelling of 245101553 in words is "two hundred forty-five million, one hundred one thousand, five hundred fifty-three".