5400021 has 8 divisors (see below), whose sum is σ = 7854624. Its totient is φ = 3272720.

The previous prime is 5400019. The next prime is 5400023. The reversal of 5400021 is 1200045.

It is an interprime number because it is at equal distance from previous prime (5400019) and next prime (5400023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5400021 - 2¹ = 5400019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5400023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81786 + ... + 81851.

It is an arithmetic number, because the mean of its divisors is an integer number (981828).

Almost surely, 2^5400021 is an apocalyptic number.

It is an amenable number.

5400021 is a deficient number, since it is larger than the sum of its proper divisors (2454603).

5400021 is a wasteful number, since it uses less digits than its factorization.

5400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163651.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 5400021 is about 2323.7945262006. The cubic root of 5400021 is about 175.4412917161.

Adding to 5400021 its reverse (1200045), we get a palindrome (6600066).

The spelling of 5400021 in words is "five million, four hundred thousand, twenty-one".