245650091 has 2 divisors, whose sum is σ = 245650092. Its totient is φ = 245650090.

The previous prime is 245650087. The next prime is 245650133. The reversal of 245650091 is 190056542.

It is a happy number.

245650091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245650091 - 2² = 245650087 is a prime.

It is not a weakly prime, because it can be changed into another prime (245650001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122825045 + 122825046.

It is an arithmetic number, because the mean of its divisors is an integer number (122825046).

Almost surely, 2^245650091 is an apocalyptic number.

245650091 is a deficient number, since it is larger than the sum of its proper divisors (1).

245650091 is an equidigital number, since it uses as much as digits as its factorization.

245650091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 245650091 is about 15673.2284804376. The cubic root of 245650091 is about 626.2854321038.

The spelling of 245650091 in words is "two hundred forty-five million, six hundred fifty thousand, ninety-one".