154204045 has 4 divisors (see below), whose sum is σ = 185044860. Its totient is φ = 123363232.

The previous prime is 154204027. The next prime is 154204079. The reversal of 154204045 is 540402451.

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: 540402451 = 6719 ⋅80429.

It can be written as a sum of positive squares in 2 ways, for example, as 85877289 + 68326756 = 9267^2 + 8266^2 .

It is a cyclic number.

It is not a de Polignac number, because 154204045 - 2¹¹ = 154201997 is a prime.

It is a congruent number.

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, 15420400 + ... + 15420409.

It is an arithmetic number, because the mean of its divisors is an integer number (46261215).

Almost surely, 2^154204045 is an apocalyptic number.

It is an amenable number.

154204045 is a deficient number, since it is larger than the sum of its proper divisors (30840815).

154204045 is an equidigital number, since it uses as much as digits as its factorization.

154204045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30840814.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 154204045 is about 12417.8921319200. The cubic root of 154204045 is about 536.2474689397.

Adding to 154204045 its reverse (540402451), we get a palindrome (694606496).

The spelling of 154204045 in words is "one hundred fifty-four million, two hundred four thousand, forty-five".