154949 has 4 divisors (see below), whose sum is σ = 156780. Its totient is φ = 153120.

The previous prime is 154943. The next prime is 154981. The reversal of 154949 is 949451.

154949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9025 + 145924 = 95^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 154949 - 2⁴ = 154933 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 (154943) 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, 782 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (39195).

2¹⁵⁴⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

154949 is a deficient number, since it is larger than the sum of its proper divisors (1831).

154949 is an equidigital number, since it uses as much as digits as its factorization.

154949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830.

The product of its digits is 6480, while the sum is 32.

The square root of 154949 is about 393.6356183071. The cubic root of 154949 is about 53.7109613773.

The spelling of 154949 in words is "one hundred fifty-four thousand, nine hundred forty-nine".