5641020 has 216 divisors, whose sum is σ = 22075872. Its totient is φ = 1140480.

The previous prime is 5641019. The next prime is 5641033. The reversal of 5641020 is 201465.

It is a happy number.

5641020 is a `hidden beast` number, since 5 + 641 + 0 + 20 = 666.

It is a super-2 number, since 2×5641020² = 63642213280800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 5640984 and 5641002.

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 71 ways as a sum of consecutive naturals, for example, 152442 + ... + 152478.

Almost surely, 2^5641020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5641020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11037936).

5641020 is an abundant number, since it is smaller than the sum of its proper divisors (16434852).

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

5641020 is a wasteful number, since it uses less digits than its factorization.

5641020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5641020 is about 2375.0831564389. The cubic root of 5641020 is about 178.0133390669.

Adding to 5641020 its reverse (201465), we get a palindrome (5842485).

5641020 divided by its reverse (201465) gives a triangular number (28 = T₇).

The spelling of 5641020 in words is "five million, six hundred forty-one thousand, twenty".