245221041 has 16 divisors (see below), whose sum is σ = 360702720. Its totient is φ = 147223680.

The previous prime is 245221021. The next prime is 245221079. The reversal of 245221041 is 140122542.

It is a de Polignac number, because none of the positive numbers 2^k-245221041 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 245220999 and 245221017.

It is not an unprimeable number, because it can be changed into a prime (245221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75081 + ... + 78278.

It is an arithmetic number, because the mean of its divisors is an integer number (22543920).

Almost surely, 2^245221041 is an apocalyptic number.

It is an amenable number.

245221041 is a deficient number, since it is larger than the sum of its proper divisors (115481679).

245221041 is a wasteful number, since it uses less digits than its factorization.

245221041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153416.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 245221041 is about 15659.5351463573. The cubic root of 245221041 is about 625.9205983189.

Adding to 245221041 its reverse (140122542), we get a palindrome (385343583).

The spelling of 245221041 in words is "two hundred forty-five million, two hundred twenty-one thousand, forty-one".