491154 has 16 divisors (see below), whose sum is σ = 992640. Its totient is φ = 162000.

The previous prime is 491149. The next prime is 491159. The reversal of 491154 is 451194.

It is an interprime number because it is at equal distance from previous prime (491149) and next prime (491159).

It is not an unprimeable number, because it can be changed into a prime (491159) by changing a digit.

491154 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279 + ... + 1029.

It is an arithmetic number, because the mean of its divisors is an integer number (62040).

2⁴⁹¹¹⁵⁴ is an apocalyptic number.

491154 is an abundant number, since it is smaller than the sum of its proper divisors (501486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491154 is a wasteful number, since it uses less digits than its factorization.

491154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its digits is 720, while the sum is 24.

The square root of 491154 is about 700.8238009657. The cubic root of 491154 is about 78.8991931113.

The spelling of 491154 in words is "four hundred ninety-one thousand, one hundred fifty-four".