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13015501 is a prime number
BaseRepresentation
bin110001101001…
…100111001101
3220111020220121
4301221213031
511312444001
61142544541
7215426032
oct61514715
926436817
1013015501
11738a814
124438151
1329092a5
141a2b389
1512216a1
hexc699cd

13015501 has 2 divisors, whose sum is σ = 13015502. Its totient is φ = 13015500.

The previous prime is 13015469. The next prime is 13015517. The reversal of 13015501 is 10551031.

It is an a-pointer prime, because the next prime (13015517) can be obtained adding 13015501 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10074276 + 2941225 = 3174^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 13015501 - 25 = 13015469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13015531) 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, 6507750 + 6507751.

It is an arithmetic number, because the mean of its divisors is an integer number (6507751).

Almost surely, 213015501 is an apocalyptic number.

It is an amenable number.

13015501 is a deficient number, since it is larger than the sum of its proper divisors (1).

13015501 is an equidigital number, since it uses as much as digits as its factorization.

13015501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 13015501 is about 3607.7002369931. The cubic root of 13015501 is about 235.2268881615.

Adding to 13015501 its reverse (10551031), we get a palindrome (23566532).

The spelling of 13015501 in words is "thirteen million, fifteen thousand, five hundred one".