5241991 has 4 divisors (see below), whose sum is σ = 5263984. Its totient is φ = 5220000.

The previous prime is 5241989. The next prime is 5242021. The reversal of 5241991 is 1991425.

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 5241991 - 2¹ = 5241989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5241931) 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, 10635 + ... + 11116.

It is an arithmetic number, because the mean of its divisors is an integer number (1315996).

Almost surely, 2^5241991 is an apocalyptic number.

5241991 is a deficient number, since it is larger than the sum of its proper divisors (21993).

5241991 is a wasteful number, since it uses less digits than its factorization.

5241991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21992.

The product of its digits is 3240, while the sum is 31.

The square root of 5241991 is about 2289.5394733439. The cubic root of 5241991 is about 173.7129079078.

The spelling of 5241991 in words is "five million, two hundred forty-one thousand, nine hundred ninety-one".