315545101 has 2 divisors, whose sum is σ = 315545102. Its totient is φ = 315545100.

The previous prime is 315545099. The next prime is 315545107. The reversal of 315545101 is 101545513.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 314211076 + 1334025 = 17726^2 + 1155^2 .

It is an emirp because it is prime and its reverse (101545513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315545101 - 2¹ = 315545099 is a prime.

Together with 315545099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315545107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157772550 + 157772551.

It is an arithmetic number, because the mean of its divisors is an integer number (157772551).

Almost surely, 2^315545101 is an apocalyptic number.

It is an amenable number.

315545101 is a deficient number, since it is larger than the sum of its proper divisors (1).

315545101 is an equidigital number, since it uses as much as digits as its factorization.

315545101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 315545101 is about 17763.5891925027. The cubic root of 315545101 is about 680.8014634545.

The spelling of 315545101 in words is "three hundred fifteen million, five hundred forty-five thousand, one hundred one".