154140017 has 4 divisors (see below), whose sum is σ = 159455220. Its totient is φ = 148824816.

The previous prime is 154140013. The next prime is 154140031. The reversal of 154140017 is 710041451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 710041451 = 7 ⋅101434493.

It can be written as a sum of positive squares in 2 ways, for example, as 73427761 + 80712256 = 8569^2 + 8984^2 .

It is a cyclic number.

It is not a de Polignac number, because 154140017 - 2² = 154140013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154139974 and 154140001.

It is not an unprimeable number, because it can be changed into a prime (154140013) 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, 2657558 + ... + 2657615.

It is an arithmetic number, because the mean of its divisors is an integer number (39863805).

Almost surely, 2^154140017 is an apocalyptic number.

It is an amenable number.

154140017 is a deficient number, since it is larger than the sum of its proper divisors (5315203).

154140017 is an equidigital number, since it uses as much as digits as its factorization.

154140017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5315202.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 154140017 is about 12415.3138099687. The cubic root of 154140017 is about 536.1732391399.

Adding to 154140017 its reverse (710041451), we get a palindrome (864181468).

The spelling of 154140017 in words is "one hundred fifty-four million, one hundred forty thousand, seventeen".