154971 has 12 divisors (see below), whose sum is σ = 228072. Its totient is φ = 101376.

The previous prime is 154943. The next prime is 154981. The reversal of 154971 is 179451.

It is not a de Polignac number, because 154971 - 2⁹ = 154459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154981) 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 11 ways as a sum of consecutive naturals, for example, 475 + ... + 731.

It is an arithmetic number, because the mean of its divisors is an integer number (19006).

2¹⁵⁴⁹⁷¹ is an apocalyptic number.

154971 is a deficient number, since it is larger than the sum of its proper divisors (73101).

154971 is a wasteful number, since it uses less digits than its factorization.

154971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 327 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 154971 is about 393.6635619409. The cubic root of 154971 is about 53.7135032572.

The spelling of 154971 in words is "one hundred fifty-four thousand, nine hundred seventy-one".