137280261 has 16 divisors (see below), whose sum is σ = 191410560. Its totient is φ = 87517760.

The previous prime is 137280239. The next prime is 137280277. The reversal of 137280261 is 162082731.

It is not a de Polignac number, because 137280261 - 2¹⁵ = 137247493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137280281) 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 15 ways as a sum of consecutive naturals, for example, 34621 + ... + 38381.

It is an arithmetic number, because the mean of its divisors is an integer number (11963160).

Almost surely, 2^137280261 is an apocalyptic number.

It is an amenable number.

137280261 is a deficient number, since it is larger than the sum of its proper divisors (54130299).

137280261 is an frugal number, since it uses more digits than its factorization.

137280261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833 (or 3787 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 137280261 is about 11716.6659506875. The cubic root of 137280261 is about 515.8649630114.

The spelling of 137280261 in words is "one hundred thirty-seven million, two hundred eighty thousand, two hundred sixty-one".