562231621 has 4 divisors (see below), whose sum is σ = 642550432. Its totient is φ = 481912812.

The previous prime is 562231597. The next prime is 562231643. The reversal of 562231621 is 126132265.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 562231621 - 2⁵ = 562231589 is a prime.

It is a super-2 number, since 2×562231621² = 632208791304575282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 562231621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (562231651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40159395 + ... + 40159408.

It is an arithmetic number, because the mean of its divisors is an integer number (160637608).

Almost surely, 2^562231621 is an apocalyptic number.

It is an amenable number.

562231621 is a deficient number, since it is larger than the sum of its proper divisors (80318811).

562231621 is an equidigital number, since it uses as much as digits as its factorization.

562231621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80318810.

The product of its digits is 4320, while the sum is 28.

The square root of 562231621 is about 23711.4238501192. The cubic root of 562231621 is about 825.3505072005.

Adding to 562231621 its reverse (126132265), we get a palindrome (688363886).

The spelling of 562231621 in words is "five hundred sixty-two million, two hundred thirty-one thousand, six hundred twenty-one".