154657 has 4 divisors (see below), whose sum is σ = 160020. Its totient is φ = 149296.

The previous prime is 154643. The next prime is 154667. The reversal of 154657 is 756451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756451 = 433 ⋅1747.

It can be written as a sum of positive squares in 2 ways, for example, as 130321 + 24336 = 361^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 154657 - 2¹⁵ = 121889 is a prime.

It is a Duffinian number.

154657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (154667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2638 + ... + 2695.

It is an arithmetic number, because the mean of its divisors is an integer number (40005).

2¹⁵⁴⁶⁵⁷ is an apocalyptic number.

It is an amenable number.

154657 is a deficient number, since it is larger than the sum of its proper divisors (5363).

154657 is an equidigital number, since it uses as much as digits as its factorization.

154657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5362.

The product of its digits is 4200, while the sum is 28.

The square root of 154657 is about 393.2645420070. The cubic root of 154657 is about 53.6772008864.

The spelling of 154657 in words is "one hundred fifty-four thousand, six hundred fifty-seven".