245222651 has 2 divisors, whose sum is σ = 245222652. Its totient is φ = 245222650.

The previous prime is 245222639. The next prime is 245222669. The reversal of 245222651 is 156222542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245222651 is a prime.

It is not a weakly prime, because it can be changed into another prime (245222611) 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, 122611325 + 122611326.

It is an arithmetic number, because the mean of its divisors is an integer number (122611326).

Almost surely, 2^245222651 is an apocalyptic number.

245222651 is a deficient number, since it is larger than the sum of its proper divisors (1).

245222651 is an equidigital number, since it uses as much as digits as its factorization.

245222651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 245222651 is about 15659.5865526520. The cubic root of 245222651 is about 625.9219681442.

The spelling of 245222651 in words is "two hundred forty-five million, two hundred twenty-two thousand, six hundred fifty-one".