245563537 has 2 divisors, whose sum is σ = 245563538. Its totient is φ = 245563536.

The previous prime is 245563531. The next prime is 245563553. The reversal of 245563537 is 735365542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150773841 + 94789696 = 12279^2 + 9736^2 .

It is a cyclic number.

It is not a de Polignac number, because 245563537 - 2²⁷ = 111345809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245563537.

It is not a weakly prime, because it can be changed into another prime (245563531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122781768 + 122781769.

It is an arithmetic number, because the mean of its divisors is an integer number (122781769).

Almost surely, 2^245563537 is an apocalyptic number.

It is an amenable number.

245563537 is a deficient number, since it is larger than the sum of its proper divisors (1).

245563537 is an equidigital number, since it uses as much as digits as its factorization.

245563537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 40.

The square root of 245563537 is about 15670.4670319681. The cubic root of 245563537 is about 626.2118669269.

The spelling of 245563537 in words is "two hundred forty-five million, five hundred sixty-three thousand, five hundred thirty-seven".