137481565 has 8 divisors (see below), whose sum is σ = 177668568. Its totient is φ = 101524800.

The previous prime is 137481551. The next prime is 137481577. The reversal of 137481565 is 565184731.

It is a happy number.

137481565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 427716 + 137053849 = 654^2 + 11707^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 137481565 - 2²⁷ = 3263837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057486 + ... + 1057615.

It is an arithmetic number, because the mean of its divisors is an integer number (22208571).

Almost surely, 2^137481565 is an apocalyptic number.

It is an amenable number.

137481565 is a deficient number, since it is larger than the sum of its proper divisors (40187003).

137481565 is a wasteful number, since it uses less digits than its factorization.

137481565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115119.

The product of its digits is 100800, while the sum is 40.

The square root of 137481565 is about 11725.2533021679. The cubic root of 137481565 is about 516.1169899288.

The spelling of 137481565 in words is "one hundred thirty-seven million, four hundred eighty-one thousand, five hundred sixty-five".