54030021 has 4 divisors (see below), whose sum is σ = 72040032. Its totient is φ = 36020012.

The previous prime is 54030019. The next prime is 54030023. The reversal of 54030021 is 12003045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (54030019) and next prime (54030023).

It is a cyclic number.

It is not a de Polignac number, because 54030021 - 2¹ = 54030019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54030023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9005001 + ... + 9005006.

It is an arithmetic number, because the mean of its divisors is an integer number (18010008).

Almost surely, 2^54030021 is an apocalyptic number.

It is an amenable number.

54030021 is a deficient number, since it is larger than the sum of its proper divisors (18010011).

54030021 is a wasteful number, since it uses less digits than its factorization.

54030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18010010.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 54030021 is about 7350.5116148470. The cubic root of 54030021 is about 378.0463466030.

Adding to 54030021 its reverse (12003045), we get a palindrome (66033066).

The spelling of 54030021 in words is "fifty-four million, thirty thousand, twenty-one".