5491658 has 4 divisors (see below), whose sum is σ = 8237490. Its totient is φ = 2745828.

The previous prime is 5491657. The next prime is 5491709. The reversal of 5491658 is 8561945.

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., 5414929 + 76729 = 2327^2 + 277^2 .

It is a super-3 number, since 3×5491658³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5491657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1372913 + ... + 1372916.

Almost surely, 2^5491658 is an apocalyptic number.

5491658 is a deficient number, since it is larger than the sum of its proper divisors (2745832).

5491658 is a wasteful number, since it uses less digits than its factorization.

5491658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2745831.

The product of its digits is 43200, while the sum is 38.

The square root of 5491658 is about 2343.4286846414. The cubic root of 5491658 is about 176.4281286825.

The spelling of 5491658 in words is "five million, four hundred ninety-one thousand, six hundred fifty-eight".