137144481 has 4 divisors (see below), whose sum is σ = 182859312. Its totient is φ = 91429652.

The previous prime is 137144473. The next prime is 137144503. The reversal of 137144481 is 184441731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137144481 - 2³ = 137144473 is a prime.

It is a super-2 number, since 2×137144481² = 37617217337518722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137144401) 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, 22857411 + ... + 22857416.

It is an arithmetic number, because the mean of its divisors is an integer number (45714828).

Almost surely, 2^137144481 is an apocalyptic number.

It is an amenable number.

137144481 is a deficient number, since it is larger than the sum of its proper divisors (45714831).

137144481 is an equidigital number, since it uses as much as digits as its factorization.

137144481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714830.

The product of its digits is 10752, while the sum is 33.

The square root of 137144481 is about 11710.8702067780. The cubic root of 137144481 is about 515.6948311227.

The spelling of 137144481 in words is "one hundred thirty-seven million, one hundred forty-four thousand, four hundred eighty-one".