15001901 has 2 divisors, whose sum is σ = 15001902. Its totient is φ = 15001900.

The previous prime is 15001897. The next prime is 15001907. The reversal of 15001901 is 10910051.

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., 12602500 + 2399401 = 3550^2 + 1549^2 .

It is an emirp because it is prime and its reverse (10910051) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15001901 - 2² = 15001897 is a prime.

It is a super-2 number, since 2×15001901² = 450114067227602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15001901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15001907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7500950 + 7500951.

It is an arithmetic number, because the mean of its divisors is an integer number (7500951).

Almost surely, 2^15001901 is an apocalyptic number.

It is an amenable number.

15001901 is a deficient number, since it is larger than the sum of its proper divisors (1).

15001901 is an equidigital number, since it uses as much as digits as its factorization.

15001901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 15001901 is about 3873.2287564770. The cubic root of 15001901 is about 246.6316253689.

Adding to 15001901 its reverse (10910051), we get a palindrome (25911952).

The spelling of 15001901 in words is "fifteen million, one thousand, nine hundred one".