5721624 has 32 divisors (see below), whose sum is σ = 15894000. Its totient is φ = 1907136.

The previous prime is 5721619. The next prime is 5721631. The reversal of 5721624 is 4261275.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13029 + ... + 13460.

Almost surely, 2^5721624 is an apocalyptic number.

5721624 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

5721624 is an abundant number, since it is smaller than the sum of its proper divisors (10172376).

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

5721624 is a wasteful number, since it uses less digits than its factorization.

5721624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26504 (or 26494 counting only the distinct ones).

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

The square root of 5721624 is about 2391.9916387814. The cubic root of 5721624 is about 178.8572043440.

Adding to 5721624 its reverse (4261275), we get a palindrome (9982899).

The spelling of 5721624 in words is "five million, seven hundred twenty-one thousand, six hundred twenty-four".