54213989 has 4 divisors (see below), whose sum is σ = 54231360. Its totient is φ = 54196620.

The previous prime is 54213977. The next prime is 54214001. The reversal of 54213989 is 98931245.

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 (54213977) and next prime (54214001).

It is a cyclic number.

It is not a de Polignac number, because 54213989 - 2¹² = 54209893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54213919) 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, 2567 + ... + 10724.

It is an arithmetic number, because the mean of its divisors is an integer number (13557840).

Almost surely, 2^54213989 is an apocalyptic number.

It is an amenable number.

54213989 is a deficient number, since it is larger than the sum of its proper divisors (17371).

54213989 is a wasteful number, since it uses less digits than its factorization.

54213989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17370.

The product of its digits is 77760, while the sum is 41.

The square root of 54213989 is about 7363.0149395475. The cubic root of 54213989 is about 378.4749332932.

The spelling of 54213989 in words is "fifty-four million, two hundred thirteen thousand, nine hundred eighty-nine".