245561527 has 2 divisors, whose sum is σ = 245561528. Its totient is φ = 245561526.

The previous prime is 245561513. The next prime is 245561551. The reversal of 245561527 is 725165542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245561527 - 2²³ = 237172919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245561027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122780763 + 122780764.

It is an arithmetic number, because the mean of its divisors is an integer number (122780764).

Almost surely, 2^245561527 is an apocalyptic number.

245561527 is a deficient number, since it is larger than the sum of its proper divisors (1).

245561527 is an equidigital number, since it uses as much as digits as its factorization.

245561527 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 37.

The square root of 245561527 is about 15670.4028984580. The cubic root of 245561527 is about 626.2101583545.

The spelling of 245561527 in words is "two hundred forty-five million, five hundred sixty-one thousand, five hundred twenty-seven".