245211061 has 2 divisors, whose sum is σ = 245211062. Its totient is φ = 245211060.

The previous prime is 245211049. The next prime is 245211091. The reversal of 245211061 is 160112542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182088036 + 63123025 = 13494^2 + 7945^2 .

It is a cyclic number.

It is not a de Polignac number, because 245211061 - 2¹³ = 245202869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245211091) 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, 122605530 + 122605531.

It is an arithmetic number, because the mean of its divisors is an integer number (122605531).

Almost surely, 2^245211061 is an apocalyptic number.

It is an amenable number.

245211061 is a deficient number, since it is larger than the sum of its proper divisors (1).

245211061 is an equidigital number, since it uses as much as digits as its factorization.

245211061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 245211061 is about 15659.2164874236. The cubic root of 245211061 is about 625.9121069699.

The spelling of 245211061 in words is "two hundred forty-five million, two hundred eleven thousand, sixty-one".