154993 has 8 divisors (see below), whose sum is σ = 164160. Its totient is φ = 146160.

The previous prime is 154991. The next prime is 155003. The reversal of 154993 is 399451.

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

It is a cyclic number.

It is not a de Polignac number, because 154993 - 2¹ = 154991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148 + ... + 2218.

It is an arithmetic number, because the mean of its divisors is an integer number (20520).

2¹⁵⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

154993 is a deficient number, since it is larger than the sum of its proper divisors (9167).

154993 is an equidigital number, since it uses as much as digits as its factorization.

154993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167.

The product of its digits is 4860, while the sum is 31.

The square root of 154993 is about 393.6915035913. The cubic root of 154993 is about 53.7160448965.

The spelling of 154993 in words is "one hundred fifty-four thousand, nine hundred ninety-three".