Search a number
15012913 is a prime number
BaseRepresentation
bin111001010001…
…010000110001
31001020201211211
4321101100301
512320403123
61253440121
7241415266
oct71212061
931221754
1015012913
118524473
125040041
1331584a6
141dcb26d
1514b840d
hexe51431

15012913 has 2 divisors, whose sum is σ = 15012914. Its totient is φ = 15012912.

The previous prime is 15012901. The next prime is 15012917. The reversal of 15012913 is 31921051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9941409 + 5071504 = 3153^2 + 2252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-15012913 is a prime.

It is not a weakly prime, because it can be changed into another prime (15012917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7506456 + 7506457.

It is an arithmetic number, because the mean of its divisors is an integer number (7506457).

Almost surely, 215012913 is an apocalyptic number.

It is an amenable number.

15012913 is a deficient number, since it is larger than the sum of its proper divisors (1).

15012913 is an equidigital number, since it uses as much as digits as its factorization.

15012913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 15012913 is about 3874.6500487141. The cubic root of 15012913 is about 246.6919564607.

Adding to 15012913 its reverse (31921051), we get a palindrome (46933964).

The spelling of 15012913 in words is "fifteen million, twelve thousand, nine hundred thirteen".