315542501 has 2 divisors, whose sum is σ = 315542502. Its totient is φ = 315542500.

The previous prime is 315542473. The next prime is 315542503. The reversal of 315542501 is 105245513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238084900 + 77457601 = 15430^2 + 8801^2 .

It is an emirp because it is prime and its reverse (105245513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315542501 - 2²² = 311348197 is a prime.

It is a Sophie Germain prime.

Together with 315542503, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315542503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157771250 + 157771251.

It is an arithmetic number, because the mean of its divisors is an integer number (157771251).

Almost surely, 2^315542501 is an apocalyptic number.

It is an amenable number.

315542501 is a deficient number, since it is larger than the sum of its proper divisors (1).

315542501 is an equidigital number, since it uses as much as digits as its factorization.

315542501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 315542501 is about 17763.5160089437. The cubic root of 315542501 is about 680.7995935806.

The spelling of 315542501 in words is "three hundred fifteen million, five hundred forty-two thousand, five hundred one".