245523011 has 2 divisors, whose sum is σ = 245523012. Its totient is φ = 245523010.

The previous prime is 245523001. The next prime is 245523049. The reversal of 245523011 is 110325542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245523011 - 2⁶ = 245522947 is a prime.

It is a super-2 number, since 2×245523011² = 120563097861012242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245523001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122761505 + 122761506.

It is an arithmetic number, because the mean of its divisors is an integer number (122761506).

Almost surely, 2^245523011 is an apocalyptic number.

245523011 is a deficient number, since it is larger than the sum of its proper divisors (1).

245523011 is an equidigital number, since it uses as much as digits as its factorization.

245523011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 245523011 is about 15669.1739093036. The cubic root of 245523011 is about 626.1774165648.

Adding to 245523011 its reverse (110325542), we get a palindrome (355848553).

The spelling of 245523011 in words is "two hundred forty-five million, five hundred twenty-three thousand, eleven".