5572821 has 16 divisors (see below), whose sum is σ = 7945344. Its totient is φ = 3462144.

The previous prime is 5572817. The next prime is 5572823. The reversal of 5572821 is 1282755.

It is not a de Polignac number, because 5572821 - 2² = 5572817 is a prime.

5572821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5572823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5280 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (496584).

Almost surely, 2^5572821 is an apocalyptic number.

5572821 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5572821 is a deficient number, since it is larger than the sum of its proper divisors (2372523).

5572821 is a wasteful number, since it uses less digits than its factorization.

5572821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100.

The product of its digits is 5600, while the sum is 30.

The square root of 5572821 is about 2360.6823166195. The cubic root of 5572821 is about 177.2930445185.

Subtracting from 5572821 its sum of digits (30), we obtain a triangular number (5572791 = T₃₃₃₈).

The spelling of 5572821 in words is "five million, five hundred seventy-two thousand, eight hundred twenty-one".