154252243 has 4 divisors (see below), whose sum is σ = 154277248. Its totient is φ = 154227240.

The previous prime is 154252211. The next prime is 154252253. The reversal of 154252243 is 342252451.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 342252451 = 59 ⋅5800889.

It is a cyclic number.

It is not a de Polignac number, because 154252243 - 2⁵ = 154252211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154252253) 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, 4105 + ... + 18037.

It is an arithmetic number, because the mean of its divisors is an integer number (38569312).

Almost surely, 2^154252243 is an apocalyptic number.

154252243 is a deficient number, since it is larger than the sum of its proper divisors (25005).

154252243 is a wasteful number, since it uses less digits than its factorization.

154252243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25004.

The product of its digits is 9600, while the sum is 28.

The square root of 154252243 is about 12419.8326478258. The cubic root of 154252243 is about 536.3033329372.

The spelling of 154252243 in words is "one hundred fifty-four million, two hundred fifty-two thousand, two hundred forty-three".