154013 has 4 divisors (see below), whose sum is σ = 154908. Its totient is φ = 153120.

The previous prime is 154001. The next prime is 154027. The reversal of 154013 is 310451.

154013 = 277² + 278².

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 310451 = 283 ⋅1097.

It can be written as a sum of positive squares in 2 ways, for example, as 76729 + 77284 = 277^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 154013 - 2⁴ = 153997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154043) 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, 98 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (38727).

2¹⁵⁴⁰¹³ is an apocalyptic number.

154013 is the 278-th centered square number.

It is an amenable number.

154013 is a deficient number, since it is larger than the sum of its proper divisors (895).

154013 is an equidigital number, since it uses as much as digits as its factorization.

154013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 154013 is about 392.4449005912. Note that the first 3 decimals coincide. The cubic root of 154013 is about 53.6025923228.

Adding to 154013 its reverse (310451), we get a palindrome (464464).

The spelling of 154013 in words is "one hundred fifty-four thousand, thirteen".