154243345 has 4 divisors (see below), whose sum is σ = 185092020. Its totient is φ = 123394672.

The previous prime is 154243301. The next prime is 154243361. The reversal of 154243345 is 543342451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543342451 = 19301 ⋅28151.

It can be written as a sum of positive squares in 2 ways, for example, as 74373376 + 79869969 = 8624^2 + 8937^2 .

It is a cyclic number.

It is not a de Polignac number, because 154243345 - 2⁷ = 154243217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15424330 + ... + 15424339.

It is an arithmetic number, because the mean of its divisors is an integer number (46273005).

Almost surely, 2^154243345 is an apocalyptic number.

It is an amenable number.

154243345 is a deficient number, since it is larger than the sum of its proper divisors (30848675).

154243345 is an equidigital number, since it uses as much as digits as its factorization.

154243345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30848674.

The product of its digits is 28800, while the sum is 31.

The square root of 154243345 is about 12419.4744252726. The cubic root of 154243345 is about 536.2930205668.

Adding to 154243345 its reverse (543342451), we get a palindrome (697585796).

It can be divided in two parts, 15424 and 3345, that added together give a square (18769 = 137²).

The spelling of 154243345 in words is "one hundred fifty-four million, two hundred forty-three thousand, three hundred forty-five".