245537841 has 4 divisors (see below), whose sum is σ = 327383792. Its totient is φ = 163691892.

The previous prime is 245537827. The next prime is 245537843. The reversal of 245537841 is 148735542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 245537841 - 2⁶ = 245537777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245537841.

It is not an unprimeable number, because it can be changed into a prime (245537843) 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 in 3 ways as a sum of consecutive naturals, for example, 40922971 + ... + 40922976.

It is an arithmetic number, because the mean of its divisors is an integer number (81845948).

Almost surely, 2^245537841 is an apocalyptic number.

It is an amenable number.

245537841 is a deficient number, since it is larger than the sum of its proper divisors (81845951).

245537841 is an equidigital number, since it uses as much as digits as its factorization.

245537841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81845950.

The product of its digits is 134400, while the sum is 39.

The square root of 245537841 is about 15669.6471242973. The cubic root of 245537841 is about 626.1900236983.

The spelling of 245537841 in words is "two hundred forty-five million, five hundred thirty-seven thousand, eight hundred forty-one".