536221291 has 4 divisors (see below), whose sum is σ = 553518784. Its totient is φ = 518923800.

The previous prime is 536221277. The next prime is 536221297. The reversal of 536221291 is 192122635.

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

It is a cyclic number.

It is not a de Polignac number, because 536221291 - 2⁷ = 536221163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 17297461 = 536221291 / (5 + 3 + 6 + 2 + 2 + 1 + 2 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (536221297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8648700 + ... + 8648761.

It is an arithmetic number, because the mean of its divisors is an integer number (138379696).

Almost surely, 2^536221291 is an apocalyptic number.

536221291 is a deficient number, since it is larger than the sum of its proper divisors (17297493).

536221291 is a wasteful number, since it uses less digits than its factorization.

536221291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17297492.

The product of its digits is 6480, while the sum is 31.

The square root of 536221291 is about 23156.4524701000. The cubic root of 536221291 is about 812.4213937682.

The spelling of 536221291 in words is "five hundred thirty-six million, two hundred twenty-one thousand, two hundred ninety-one".