245194121 has 2 divisors, whose sum is σ = 245194122. Its totient is φ = 245194120.

The previous prime is 245194109. The next prime is 245194133. The reversal of 245194121 is 121491542.

It is a balanced prime because it is at equal distance from previous prime (245194109) and next prime (245194133).

It can be written as a sum of positive squares in only one way, i.e., 220938496 + 24255625 = 14864^2 + 4925^2 .

It is a cyclic number.

It is not a de Polignac number, because 245194121 - 2⁶ = 245194057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245194721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122597060 + 122597061.

It is an arithmetic number, because the mean of its divisors is an integer number (122597061).

Almost surely, 2^245194121 is an apocalyptic number.

It is an amenable number.

245194121 is a deficient number, since it is larger than the sum of its proper divisors (1).

245194121 is an equidigital number, since it uses as much as digits as its factorization.

245194121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 29.

The square root of 245194121 is about 15658.6755825644. The cubic root of 245194121 is about 625.8976932709.

The spelling of 245194121 in words is "two hundred forty-five million, one hundred ninety-four thousand, one hundred twenty-one".