491355274 has 4 divisors (see below), whose sum is σ = 737032914. Its totient is φ = 245677636.

The previous prime is 491355259. The next prime is 491355299. The reversal of 491355274 is 472553194.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 456036025 + 35319249 = 21355^2 + 5943^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122838817 + ... + 122838820.

Almost surely, 2^491355274 is an apocalyptic number.

491355274 is a deficient number, since it is larger than the sum of its proper divisors (245677640).

491355274 is a wasteful number, since it uses less digits than its factorization.

491355274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245677639.

The product of its digits is 151200, while the sum is 40.

The square root of 491355274 is about 22166.5350021152. The cubic root of 491355274 is about 789.0996922056.

The spelling of 491355274 in words is "four hundred ninety-one million, three hundred fifty-five thousand, two hundred seventy-four".