245874641 has 2 divisors, whose sum is σ = 245874642. Its totient is φ = 245874640.

The previous prime is 245874637. The next prime is 245874701. The reversal of 245874641 is 146478542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234212416 + 11662225 = 15304^2 + 3415^2 .

It is a cyclic number.

It is not a de Polignac number, because 245874641 - 2² = 245874637 is a prime.

It is not a weakly prime, because it can be changed into another prime (245874631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122937320 + 122937321.

It is an arithmetic number, because the mean of its divisors is an integer number (122937321).

Almost surely, 2^245874641 is an apocalyptic number.

It is an amenable number.

245874641 is a deficient number, since it is larger than the sum of its proper divisors (1).

245874641 is an equidigital number, since it uses as much as digits as its factorization.

245874641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 41.

The square root of 245874641 is about 15680.3903331518. The cubic root of 245874641 is about 626.4762042220.

The spelling of 245874641 in words is "two hundred forty-five million, eight hundred seventy-four thousand, six hundred forty-one".