154984961 has 8 divisors (see below), whose sum is σ = 164241000. Its totient is φ = 145989760.

The previous prime is 154984939. The next prime is 154984969. The reversal of 154984961 is 169489451.

It can be written as a sum of positive squares in 4 ways, for example, as 231361 + 154753600 = 481^2 + 12440^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154984961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154984969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63986 + ... + 66363.

It is an arithmetic number, because the mean of its divisors is an integer number (20530125).

Almost surely, 2^154984961 is an apocalyptic number.

It is an amenable number.

154984961 is a deficient number, since it is larger than the sum of its proper divisors (9256039).

154984961 is a wasteful number, since it uses less digits than its factorization.

154984961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130419.

The product of its digits is 311040, while the sum is 47.

The square root of 154984961 is about 12449.2956025632. The cubic root of 154984961 is about 537.1511618625.

The spelling of 154984961 in words is "one hundred fifty-four million, nine hundred eighty-four thousand, nine hundred sixty-one".