245015999 has 2 divisors, whose sum is σ = 245016000. Its totient is φ = 245015998.

The previous prime is 245015993. The next prime is 245016007. The reversal of 245015999 is 999510542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245015999 - 2¹² = 245011903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245015993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122507999 + 122508000.

It is an arithmetic number, because the mean of its divisors is an integer number (122508000).

Almost surely, 2^245015999 is an apocalyptic number.

245015999 is a deficient number, since it is larger than the sum of its proper divisors (1).

245015999 is an equidigital number, since it uses as much as digits as its factorization.

245015999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 245015999 is about 15652.9869034635. The cubic root of 245015999 is about 625.7460948070.

The spelling of 245015999 in words is "two hundred forty-five million, fifteen thousand, nine hundred ninety-nine".