146549 has 4 divisors (see below), whose sum is σ = 157836. Its totient is φ = 135264.

The previous prime is 146543. The next prime is 146563. The reversal of 146549 is 945641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945641 = 191 ⋅4951.

It can be written as a sum of positive squares in 2 ways, for example, as 28900 + 117649 = 170^2 + 343^2 .

It is a cyclic number.

It is not a de Polignac number, because 146549 - 2¹² = 142453 is a prime.

It is an Ulam number.

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 (146543) 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, 5624 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (39459).

2¹⁴⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

146549 is a deficient number, since it is larger than the sum of its proper divisors (11287).

146549 is a wasteful number, since it uses less digits than its factorization.

146549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11286.

The product of its digits is 4320, while the sum is 29.

The square root of 146549 is about 382.8171887468. The cubic root of 146549 is about 52.7222925250.

The spelling of 146549 in words is "one hundred forty-six thousand, five hundred forty-nine".