15318001 has 2 divisors, whose sum is σ = 15318002. Its totient is φ = 15318000.

The previous prime is 15317989. The next prime is 15318011. The reversal of 15318001 is 10081351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 456976 = 3855^2 + 676^2 .

It is a cyclic number.

It is not a de Polignac number, because 15318001 - 2¹⁷ = 15186929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15318001.

It is not a weakly prime, because it can be changed into another prime (15318011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7659000 + 7659001.

It is an arithmetic number, because the mean of its divisors is an integer number (7659001).

Almost surely, 2^15318001 is an apocalyptic number.

It is an amenable number.

15318001 is a deficient number, since it is larger than the sum of its proper divisors (1).

15318001 is an equidigital number, since it uses as much as digits as its factorization.

15318001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 15318001 is about 3913.8217895045. The cubic root of 15318001 is about 248.3518300213.

Adding to 15318001 its reverse (10081351), we get a palindrome (25399352).

The spelling of 15318001 in words is "fifteen million, three hundred eighteen thousand, one".