154522849 has 4 divisors (see below), whose sum is σ = 166409236. Its totient is φ = 142636464.

The previous prime is 154522847. The next prime is 154522853. The reversal of 154522849 is 948225451.

It is a happy number.

154522849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948225451 = 2549 ⋅371999.

It can be written as a sum of positive squares in 2 ways, for example, as 69422224 + 85100625 = 8332^2 + 9225^2 .

It is a cyclic number.

It is not a de Polignac number, because 154522849 - 2¹ = 154522847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154522847) 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, 5943174 + ... + 5943199.

It is an arithmetic number, because the mean of its divisors is an integer number (41602309).

Almost surely, 2^154522849 is an apocalyptic number.

It is an amenable number.

154522849 is a deficient number, since it is larger than the sum of its proper divisors (11886387).

154522849 is a wasteful number, since it uses less digits than its factorization.

154522849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11886386.

The product of its digits is 115200, while the sum is 40.

The square root of 154522849 is about 12430.7219822503. The cubic root of 154522849 is about 536.6167635315.

The spelling of 154522849 in words is "one hundred fifty-four million, five hundred twenty-two thousand, eight hundred forty-nine".