137274481 has 2 divisors, whose sum is σ = 137274482. Its totient is φ = 137274480.

The previous prime is 137274463. The next prime is 137274493. The reversal of 137274481 is 184472731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99820081 + 37454400 = 9991^2 + 6120^2 .

It is a cyclic number.

It is not a de Polignac number, because 137274481 - 2¹³ = 137266289 is a prime.

It is a super-2 number, since 2×137274481² = 37688566267638722, 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 137274481.

It is not a weakly prime, because it can be changed into another prime (137274421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68637240 + 68637241.

It is an arithmetic number, because the mean of its divisors is an integer number (68637241).

Almost surely, 2^137274481 is an apocalyptic number.

It is an amenable number.

137274481 is a deficient number, since it is larger than the sum of its proper divisors (1).

137274481 is an equidigital number, since it uses as much as digits as its factorization.

137274481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 37.

The square root of 137274481 is about 11716.4192908926. The cubic root of 137274481 is about 515.8577229773.

The spelling of 137274481 in words is "one hundred thirty-seven million, two hundred seventy-four thousand, four hundred eighty-one".