154332947 has 4 divisors (see below), whose sum is σ = 155007120. Its totient is φ = 153658776.

The previous prime is 154332943. The next prime is 154333001. The reversal of 154332947 is 749233451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749233451 = 31 ⋅24168821.

It is a cyclic number.

It is not a de Polignac number, because 154332947 - 2² = 154332943 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 154332947.

It is not an unprimeable number, because it can be changed into a prime (154332943) 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, 336743 + ... + 337200.

It is an arithmetic number, because the mean of its divisors is an integer number (38751780).

Almost surely, 2^154332947 is an apocalyptic number.

154332947 is a deficient number, since it is larger than the sum of its proper divisors (674173).

154332947 is an equidigital number, since it uses as much as digits as its factorization.

154332947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674172.

The product of its digits is 90720, while the sum is 38.

The square root of 154332947 is about 12423.0812200517. The cubic root of 154332947 is about 536.3968470352.

The spelling of 154332947 in words is "one hundred fifty-four million, three hundred thirty-two thousand, nine hundred forty-seven".