245533513 has 2 divisors, whose sum is σ = 245533514. Its totient is φ = 245533512.

The previous prime is 245533507. The next prime is 245533573. The reversal of 245533513 is 315335542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218211984 + 27321529 = 14772^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 245533513 - 2²⁵ = 211979081 is a prime.

It is a super-2 number, since 2×245533513² = 120573412012242338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245533573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122766756 + 122766757.

It is an arithmetic number, because the mean of its divisors is an integer number (122766757).

Almost surely, 2^245533513 is an apocalyptic number.

It is an amenable number.

245533513 is a deficient number, since it is larger than the sum of its proper divisors (1).

245533513 is an equidigital number, since it uses as much as digits as its factorization.

245533513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27000, while the sum is 31.

The square root of 245533513 is about 15669.5090223019. The cubic root of 245533513 is about 626.1863444741.

The spelling of 245533513 in words is "two hundred forty-five million, five hundred thirty-three thousand, five hundred thirteen".