245242541 has 2 divisors, whose sum is σ = 245242542. Its totient is φ = 245242540.

The previous prime is 245242523. The next prime is 245242553. The reversal of 245242541 is 145242542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131905225 + 113337316 = 11485^2 + 10646^2 .

It is a cyclic number.

It is not a de Polignac number, because 245242541 - 2⁶ = 245242477 is a prime.

It is a super-2 number, since 2×245242541² = 120287807832273362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245242141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122621270 + 122621271.

It is an arithmetic number, because the mean of its divisors is an integer number (122621271).

Almost surely, 2^245242541 is an apocalyptic number.

It is an amenable number.

245242541 is a deficient number, since it is larger than the sum of its proper divisors (1).

245242541 is an equidigital number, since it uses as much as digits as its factorization.

245242541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 29.

The square root of 245242541 is about 15660.2216140130. The cubic root of 245242541 is about 625.9388905224.

Subtracting from 245242541 its reverse (145242542), we obtain a palindrome (99999999).

The spelling of 245242541 in words is "two hundred forty-five million, two hundred forty-two thousand, five hundred forty-one".