245441657 has 4 divisors (see below), whose sum is σ = 245967696. Its totient is φ = 244915620.

The previous prime is 245441641. The next prime is 245441747. The reversal of 245441657 is 756144542.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 756144542 = 2 ⋅378072271.

It is a cyclic number.

It is not a de Polignac number, because 245441657 - 2⁴ = 245441641 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 245441657.

It is not an unprimeable number, because it can be changed into a prime (245441627) 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, 262319 + ... + 263252.

It is an arithmetic number, because the mean of its divisors is an integer number (61491924).

Almost surely, 2^245441657 is an apocalyptic number.

It is an amenable number.

245441657 is a deficient number, since it is larger than the sum of its proper divisors (526039).

245441657 is an equidigital number, since it uses as much as digits as its factorization.

245441657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526038.

The product of its digits is 134400, while the sum is 38.

The square root of 245441657 is about 15666.5777054212. The cubic root of 245441657 is about 626.1082476712.

The spelling of 245441657 in words is "two hundred forty-five million, four hundred forty-one thousand, six hundred fifty-seven".