115220447 has 2 divisors, whose sum is σ = 115220448. Its totient is φ = 115220446.

The previous prime is 115220429. The next prime is 115220461. The reversal of 115220447 is 744022511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115220447 - 2⁸ = 115220191 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 (115220467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57610223 + 57610224.

It is an arithmetic number, because the mean of its divisors is an integer number (57610224).

Almost surely, 2^115220447 is an apocalyptic number.

115220447 is a deficient number, since it is larger than the sum of its proper divisors (1).

115220447 is an equidigital number, since it uses as much as digits as its factorization.

115220447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 115220447 is about 10734.0787681105. The cubic root of 115220447 is about 486.6049456244.

Adding to 115220447 its reverse (744022511), we get a palindrome (859242958).

The spelling of 115220447 in words is "one hundred fifteen million, two hundred twenty thousand, four hundred forty-seven".