154252231 has 4 divisors (see below), whose sum is σ = 176288272. Its totient is φ = 132216192.

The previous prime is 154252211. The next prime is 154252253. The reversal of 154252231 is 132252451.

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

It is a cyclic number.

It is not a de Polignac number, because 154252231 - 2⁵ = 154252199 is a prime.

It is a super-2 number, since 2×154252231² = 47587501536954722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154252196 and 154252205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154252201) 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, 11018010 + ... + 11018023.

It is an arithmetic number, because the mean of its divisors is an integer number (44072068).

Almost surely, 2^154252231 is an apocalyptic number.

154252231 is a deficient number, since it is larger than the sum of its proper divisors (22036041).

154252231 is an equidigital number, since it uses as much as digits as its factorization.

154252231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22036040.

The product of its digits is 2400, while the sum is 25.

The square root of 154252231 is about 12419.8321647275. The cubic root of 154252231 is about 536.3033190301.

The spelling of 154252231 in words is "one hundred fifty-four million, two hundred fifty-two thousand, two hundred thirty-one".