147137549 has 4 divisors (see below), whose sum is σ = 158455836. Its totient is φ = 135819264.

The previous prime is 147137537. The next prime is 147137569. The reversal of 147137549 is 945731741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945731741 = 19373 ⋅48817.

It can be written as a sum of positive squares in 2 ways, for example, as 89908324 + 57229225 = 9482^2 + 7565^2 .

It is a cyclic number.

It is not a de Polignac number, because 147137549 - 2²⁴ = 130360333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147137569) 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, 5659124 + ... + 5659149.

It is an arithmetic number, because the mean of its divisors is an integer number (39613959).

Almost surely, 2^147137549 is an apocalyptic number.

It is an amenable number.

147137549 is a deficient number, since it is larger than the sum of its proper divisors (11318287).

147137549 is a wasteful number, since it uses less digits than its factorization.

147137549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11318286.

The product of its digits is 105840, while the sum is 41.

The square root of 147137549 is about 12130.0267518254. The cubic root of 147137549 is about 527.9277681358.

The spelling of 147137549 in words is "one hundred forty-seven million, one hundred thirty-seven thousand, five hundred forty-nine".