137275081 has 4 divisors (see below), whose sum is σ = 137371012. Its totient is φ = 137179152.

The previous prime is 137275013. The next prime is 137275097. The reversal of 137275081 is 180572731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180572731 = 47 ⋅3841973.

It can be written as a sum of positive squares in 2 ways, for example, as 133194681 + 4080400 = 11541^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 137275081 - 2⁹ = 137274569 is a prime.

It is a super-2 number, since 2×137275081² = 37688895727113122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137275181) 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 in 3 ways as a sum of consecutive naturals, for example, 45786 + ... + 48691.

It is an arithmetic number, because the mean of its divisors is an integer number (34342753).

Almost surely, 2^137275081 is an apocalyptic number.

It is an amenable number.

137275081 is a deficient number, since it is larger than the sum of its proper divisors (95931).

137275081 is an equidigital number, since it uses as much as digits as its factorization.

137275081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95930.

The product of its (nonzero) digits is 11760, while the sum is 34.

The square root of 137275081 is about 11716.4448959571. Note that the first 3 decimals coincide. The cubic root of 137275081 is about 515.8584745474.

The spelling of 137275081 in words is "one hundred thirty-seven million, two hundred seventy-five thousand, eighty-one".