5621481 has 10 divisors (see below), whose sum is σ = 8397642. Its totient is φ = 3747600.

The previous prime is 5621479. The next prime is 5621489. The reversal of 5621481 is 1841265.

It can be written as a sum of positive squares in only one way, i.e., 5103081 + 518400 = 2259^2 + 720^2 .

It is not a de Polignac number, because 5621481 - 2¹ = 5621479 is a prime.

It is a super-2 number, since 2×5621481² = 63202097266722, which contains 22 as substring.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5621489) 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 9 ways as a sum of consecutive naturals, for example, 34620 + ... + 34781.

Almost surely, 2^5621481 is an apocalyptic number.

It is an amenable number.

5621481 is a deficient number, since it is larger than the sum of its proper divisors (2776161).

5621481 is an equidigital number, since it uses as much as digits as its factorization.

5621481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69413 (or 69404 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 5621481 is about 2370.9662587224. The cubic root of 5621481 is about 177.8075709472.

The spelling of 5621481 in words is "five million, six hundred twenty-one thousand, four hundred eighty-one".