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15137065 = 5532392
BaseRepresentation
bin111001101111…
…100100101001
31001111001011001
4321233210221
512333341230
61300235001
7242443246
oct71574451
931431131
1015137065
1185a9779
12509ba61
13319cb58
1420205cd
1514e00ca
hexe6f929

15137065 has 12 divisors (see below), whose sum is σ = 18584964. Its totient is φ = 11831456.

The previous prime is 15137063. The next prime is 15137069. The reversal of 15137065 is 56073151.

It can be written as a sum of positive squares in 2 ways, for example, as 8225424 + 6911641 = 2868^2 + 2629^2 .

It is not a de Polignac number, because 15137065 - 21 = 15137063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15137063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63216 + ... + 63454.

It is an arithmetic number, because the mean of its divisors is an integer number (1548747).

Almost surely, 215137065 is an apocalyptic number.

It is an amenable number.

15137065 is a deficient number, since it is larger than the sum of its proper divisors (3447899).

15137065 is an frugal number, since it uses more digits than its factorization.

15137065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 15137065 is about 3890.6381224678. The cubic root of 15137065 is about 247.3701117601.

The spelling of 15137065 in words is "fifteen million, one hundred thirty-seven thousand, sixty-five".

Divisors: 1 5 53 239 265 1195 12667 57121 63335 285605 3027413 15137065