154749 has 8 divisors (see below), whose sum is σ = 235840. Its totient is φ = 88416.

The previous prime is 154747. The next prime is 154753. The reversal of 154749 is 947451.

It is a happy number.

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

It is not a de Polignac number, because 154749 - 2¹ = 154747 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3664 + ... + 3705.

It is an arithmetic number, because the mean of its divisors is an integer number (29480).

2¹⁵⁴⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

154749 is a deficient number, since it is larger than the sum of its proper divisors (81091).

154749 is an equidigital number, since it uses as much as digits as its factorization.

154749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379.

The product of its digits is 5040, while the sum is 30.

The square root of 154749 is about 393.3814942267. The cubic root of 154749 is about 53.6878423351.

It can be divided in two parts, 1547 and 49, that added together give a triangular number (1596 = T₅₆).

The spelling of 154749 in words is "one hundred fifty-four thousand, seven hundred forty-nine".