5311491 has 4 divisors (see below), whose sum is σ = 7081992. Its totient is φ = 3540992.

The previous prime is 5311487. The next prime is 5311499. The reversal of 5311491 is 1941135.

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 5311491 - 2² = 5311487 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (5311499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885246 + ... + 885251.

It is an arithmetic number, because the mean of its divisors is an integer number (1770498).

Almost surely, 2^5311491 is an apocalyptic number.

5311491 is a deficient number, since it is larger than the sum of its proper divisors (1770501).

5311491 is a wasteful number, since it uses less digits than its factorization.

5311491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770500.

The product of its digits is 540, while the sum is 24.

The square root of 5311491 is about 2304.6672210972. The cubic root of 5311491 is about 174.4772536531.

The spelling of 5311491 in words is "five million, three hundred eleven thousand, four hundred ninety-one".