5406021 has 12 divisors (see below), whose sum is σ = 8098272. Its totient is φ = 3603852.

The previous prime is 5406019. The next prime is 5406041. The reversal of 5406021 is 1206045.

Added to its reverse (1206045) it gives a triangular number (6612066 = T₃₆₃₆).

It is a happy number.

It is not a de Polignac number, because 5406021 - 2¹ = 5406019 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 5405985 and 5406003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5406041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10881 + ... + 11366.

It is an arithmetic number, because the mean of its divisors is an integer number (674856).

Almost surely, 2^5406021 is an apocalyptic number.

It is an amenable number.

5406021 is a deficient number, since it is larger than the sum of its proper divisors (2692251).

5406021 is an equidigital number, since it uses as much as digits as its factorization.

5406021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22262 (or 22250 counting only the distinct ones).

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

The square root of 5406021 is about 2325.0851597307. The cubic root of 5406021 is about 175.5062456686.

Adding to 5406021 its reverse (1206045), we get a triangular number (6612066 = T₃₆₃₆).

It can be divided in two parts, 540 and 6021, that added together give a 8-th power (6561 = 3⁸).

The spelling of 5406021 in words is "five million, four hundred six thousand, twenty-one".