5621011 has 4 divisors (see below), whose sum is σ = 6132024. Its totient is φ = 5110000.

The previous prime is 5620997. The next prime is 5621023. The reversal of 5621011 is 1101265.

It is a happy number.

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 5621011 - 2⁷ = 5620883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5621051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255490 + ... + 255511.

It is an arithmetic number, because the mean of its divisors is an integer number (1533006).

Almost surely, 2^5621011 is an apocalyptic number.

5621011 is a deficient number, since it is larger than the sum of its proper divisors (511013).

5621011 is a wasteful number, since it uses less digits than its factorization.

5621011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511012.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 5621011 is about 2370.8671409423. The cubic root of 5621011 is about 177.8026154389.

Adding to 5621011 its reverse (1101265), we get a palindrome (6722276).

The spelling of 5621011 in words is "five million, six hundred twenty-one thousand, eleven".