5621911 has 4 divisors (see below), whose sum is σ = 5815800. Its totient is φ = 5428024.

The previous prime is 5621899. The next prime is 5621921. The reversal of 5621911 is 1191265.

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 5621911 - 2¹³ = 5613719 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 (5621921) 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, 96901 + ... + 96958.

It is an arithmetic number, because the mean of its divisors is an integer number (1453950).

Almost surely, 2^5621911 is an apocalyptic number.

5621911 is a deficient number, since it is larger than the sum of its proper divisors (193889).

5621911 is a wasteful number, since it uses less digits than its factorization.

5621911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193888.

The product of its digits is 540, while the sum is 25.

The square root of 5621911 is about 2371.0569373172. The cubic root of 5621911 is about 177.8121044682.

The spelling of 5621911 in words is "five million, six hundred twenty-one thousand, nine hundred eleven".