154074961 has 4 divisors (see below), whose sum is σ = 163138212. Its totient is φ = 145011712.

The previous prime is 154074923. The next prime is 154074989. The reversal of 154074961 is 169470451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 169470451 = 127 ⋅1334413.

It can be written as a sum of positive squares in 2 ways, for example, as 131331600 + 22743361 = 11460^2 + 4769^2 .

It is a cyclic number.

It is not a de Polignac number, because 154074961 - 2¹⁹ = 153550673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154074961.

It is not an unprimeable number, because it can be changed into a prime (154174961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4531600 + ... + 4531633.

It is an arithmetic number, because the mean of its divisors is an integer number (40784553).

Almost surely, 2^154074961 is an apocalyptic number.

It is an amenable number.

154074961 is a deficient number, since it is larger than the sum of its proper divisors (9063251).

154074961 is an equidigital number, since it uses as much as digits as its factorization.

154074961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9063250.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 154074961 is about 12412.6935433048. The cubic root of 154074961 is about 536.0977964885.

The spelling of 154074961 in words is "one hundred fifty-four million, seventy-four thousand, nine hundred sixty-one".