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137525749 is a prime number
BaseRepresentation
bin10000011001001…
…11100111110101
3100120210000212021
420030213213311
5240201310444
621351353141
73256643464
oct1014474765
9316700767
10137525749
11706a2149
123a0827b1
13226520aa
141439c9db
15c118584
hex83279f5

137525749 has 2 divisors, whose sum is σ = 137525750. Its totient is φ = 137525748.

The previous prime is 137525747. The next prime is 137525761. The reversal of 137525749 is 947525731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133240849 + 4284900 = 11543^2 + 2070^2 .

It is a cyclic number.

It is not a de Polignac number, because 137525749 - 21 = 137525747 is a prime.

It is a super-2 number, since 2×1375257492 = 37826663276022002, which contains 22 as substring.

Together with 137525747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137525747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68762874 + 68762875.

It is an arithmetic number, because the mean of its divisors is an integer number (68762875).

Almost surely, 2137525749 is an apocalyptic number.

It is an amenable number.

137525749 is a deficient number, since it is larger than the sum of its proper divisors (1).

137525749 is an equidigital number, since it uses as much as digits as its factorization.

137525749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 43.

The square root of 137525749 is about 11727.1372892109. The cubic root of 137525749 is about 516.1722741181.

The spelling of 137525749 in words is "one hundred thirty-seven million, five hundred twenty-five thousand, seven hundred forty-nine".