154156241 has 4 divisors (see below), whose sum is σ = 154955172. Its totient is φ = 153357312.

The previous prime is 154156231. The next prime is 154156267. The reversal of 154156241 is 142651451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142651451 = 23 ⋅6202237.

It can be written as a sum of positive squares in 2 ways, for example, as 43296400 + 110859841 = 6580^2 + 10529^2 .

It is a cyclic number.

It is not a de Polignac number, because 154156241 - 2²² = 149961937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154156231) 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, 399176 + ... + 399561.

It is an arithmetic number, because the mean of its divisors is an integer number (38738793).

Almost surely, 2^154156241 is an apocalyptic number.

It is an amenable number.

154156241 is a deficient number, since it is larger than the sum of its proper divisors (798931).

154156241 is an equidigital number, since it uses as much as digits as its factorization.

154156241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798930.

The product of its digits is 4800, while the sum is 29.

The square root of 154156241 is about 12415.9671794025. The cubic root of 154156241 is about 536.1920501094.

The spelling of 154156241 in words is "one hundred fifty-four million, one hundred fifty-six thousand, two hundred forty-one".