5621724 has 30 divisors (see below), whose sum is σ = 14697144. Its totient is φ = 1873800.

The previous prime is 5621687. The next prime is 5621731. The reversal of 5621724 is 4271265.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8352 + ... + 8999.

Almost surely, 2^5621724 is an apocalyptic number.

5621724 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5621724 is an abundant number, since it is smaller than the sum of its proper divisors (9075420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5621724 is a wasteful number, since it uses less digits than its factorization.

5621724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17367 (or 17356 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 5621724 is about 2371.0175030986. The cubic root of 5621724 is about 177.8101329421.

Adding to 5621724 its reverse (4271265), we get a palindrome (9892989).

It can be divided in two parts, 5621 and 724, that multiplied together give a palindrome (4069604).

The spelling of 5621724 in words is "five million, six hundred twenty-one thousand, seven hundred twenty-four".