491022053 has 4 divisors (see below), whose sum is σ = 494149740. Its totient is φ = 487894368.

The previous prime is 491022047. The next prime is 491022071. The reversal of 491022053 is 350220194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350220194 = 2 ⋅175110097.

It can be written as a sum of positive squares in 2 ways, for example, as 335695684 + 155326369 = 18322^2 + 12463^2 .

It is a cyclic number.

It is not a de Polignac number, because 491022053 - 2¹⁰ = 491021029 is a prime.

It is a super-2 number, since 2×491022053² = 482205313064669618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491022083) 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, 1563608 + ... + 1563921.

It is an arithmetic number, because the mean of its divisors is an integer number (123537435).

Almost surely, 2^491022053 is an apocalyptic number.

It is an amenable number.

491022053 is a deficient number, since it is larger than the sum of its proper divisors (3127687).

491022053 is a wasteful number, since it uses less digits than its factorization.

491022053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127686.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 491022053 is about 22159.0174195518. The cubic root of 491022053 is about 788.9212713731.

The spelling of 491022053 in words is "four hundred ninety-one million, twenty-two thousand, fifty-three".