137382481 has 4 divisors (see below), whose sum is σ = 138080052. Its totient is φ = 136684912.

The previous prime is 137382437. The next prime is 137382493. The reversal of 137382481 is 184283731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184283731 = 127 ⋅1451053.

It can be written as a sum of positive squares in 2 ways, for example, as 113529025 + 23853456 = 10655^2 + 4884^2 .

It is a cyclic number.

It is not a de Polignac number, because 137382481 - 2⁷ = 137382353 is a prime.

It is a super-2 number, since 2×137382481² = 37747892171430722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137382481.

It is not an unprimeable number, because it can be changed into a prime (137382781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348490 + ... + 348883.

It is an arithmetic number, because the mean of its divisors is an integer number (34520013).

Almost surely, 2^137382481 is an apocalyptic number.

It is an amenable number.

137382481 is a deficient number, since it is larger than the sum of its proper divisors (697571).

137382481 is an equidigital number, since it uses as much as digits as its factorization.

137382481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697570.

The product of its digits is 32256, while the sum is 37.

The square root of 137382481 is about 11721.0273013930. The cubic root of 137382481 is about 515.9929703287.

The spelling of 137382481 in words is "one hundred thirty-seven million, three hundred eighty-two thousand, four hundred eighty-one".