5481021 has 32 divisors (see below), whose sum is σ = 9531648. Its totient is φ = 2718720.

The previous prime is 5481019. The next prime is 5481023. The reversal of 5481021 is 1201845.

5481021 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5481019) and next prime (5481023).

It is not a de Polignac number, because 5481021 - 2¹ = 5481019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5481023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4051 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (297864).

Almost surely, 2^5481021 is an apocalyptic number.

5481021 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5481021 is a deficient number, since it is larger than the sum of its proper divisors (4050627).

5481021 is a wasteful number, since it uses less digits than its factorization.

5481021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 5481021 is about 2341.1580467794. The cubic root of 5481021 is about 176.3141449535.

Adding to 5481021 its reverse (1201845), we get a palindrome (6682866).

The spelling of 5481021 in words is "five million, four hundred eighty-one thousand, twenty-one".