1105172501 has 2 divisors, whose sum is σ = 1105172502. Its totient is φ = 1105172500.

The previous prime is 1105172491. The next prime is 1105172503. The reversal of 1105172501 is 1052715011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 882387025 + 222785476 = 29705^2 + 14926^2 .

It is an emirp because it is prime and its reverse (1052715011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105172501 is a prime.

Together with 1105172503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105172503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552586250 + 552586251.

It is an arithmetic number, because the mean of its divisors is an integer number (552586251).

Almost surely, 2^1105172501 is an apocalyptic number.

It is an amenable number.

1105172501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105172501 is an equidigital number, since it uses as much as digits as its factorization.

1105172501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 350, while the sum is 23.

The square root of 1105172501 is about 33244.1348360880. The cubic root of 1105172501 is about 1033.8956071256.

Adding to 1105172501 its reverse (1052715011), we get a palindrome (2157887512).

The spelling of 1105172501 in words is "one billion, one hundred five million, one hundred seventy-two thousand, five hundred one".