154479274 has 4 divisors (see below), whose sum is σ = 231718914. Its totient is φ = 77239636.

The previous prime is 154479251. The next prime is 154479277. The reversal of 154479274 is 472974451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 472974451 = 17783 ⋅26597.

It can be written as a sum of positive squares in only one way, i.e., 153140625 + 1338649 = 12375^2 + 1157^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 154479274.

It is not an unprimeable number, because it can be changed into a prime (154479277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38619817 + ... + 38619820.

Almost surely, 2^154479274 is an apocalyptic number.

154479274 is a deficient number, since it is larger than the sum of its proper divisors (77239640).

154479274 is an equidigital number, since it uses as much as digits as its factorization.

154479274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77239639.

The product of its digits is 282240, while the sum is 43.

The square root of 154479274 is about 12428.9691447038. The cubic root of 154479274 is about 536.5663173268.

The spelling of 154479274 in words is "one hundred fifty-four million, four hundred seventy-nine thousand, two hundred seventy-four".