5631266 has 4 divisors (see below), whose sum is σ = 8446902. Its totient is φ = 2815632.

The previous prime is 5631259. The next prime is 5631271. The reversal of 5631266 is 6621365.

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., 5424241 + 207025 = 2329^2 + 455^2 .

It is a super-3 number, since 3×5631266³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1407815 + ... + 1407818.

Almost surely, 2^5631266 is an apocalyptic number.

5631266 is a deficient number, since it is larger than the sum of its proper divisors (2815636).

5631266 is a wasteful number, since it uses less digits than its factorization.

5631266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2815635.

The product of its digits is 6480, while the sum is 29.

The square root of 5631266 is about 2373.0288662383. The cubic root of 5631266 is about 177.9106777365.

Subtracting 5631266 from its reverse (6621365), we obtain a palindrome (990099).

The spelling of 5631266 in words is "five million, six hundred thirty-one thousand, two hundred sixty-six".