245200032521 has 2 divisors, whose sum is σ = 245200032522. Its totient is φ = 245200032520.

The previous prime is 245200032487. The next prime is 245200032527. The reversal of 245200032521 is 125230002542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204607856896 + 40592175625 = 452336^2 + 201475^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245200032521 is a prime.

It is not a weakly prime, because it can be changed into another prime (245200032527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122600016260 + 122600016261.

It is an arithmetic number, because the mean of its divisors is an integer number (122600016261).

Almost surely, 2^245200032521 is an apocalyptic number.

It is an amenable number.

245200032521 is a deficient number, since it is larger than the sum of its proper divisors (1).

245200032521 is an equidigital number, since it uses as much as digits as its factorization.

245200032521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 26.

The spelling of 245200032521 in words is "two hundred forty-five billion, two hundred million, thirty-two thousand, five hundred twenty-one".