54421493 has 4 divisors (see below), whose sum is σ = 62196000. Its totient is φ = 46646988.

The previous prime is 54421481. The next prime is 54421501. The reversal of 54421493 is 39412445.

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, and also an emirpimes, since its reverse is a distinct semiprime: 39412445 = 5 ⋅7882489.

It is a cyclic number.

It is not a de Polignac number, because 54421493 - 2¹⁶ = 54355957 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 (54421693) 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, 3887243 + ... + 3887256.

It is an arithmetic number, because the mean of its divisors is an integer number (15549000).

Almost surely, 2^54421493 is an apocalyptic number.

It is an amenable number.

54421493 is a deficient number, since it is larger than the sum of its proper divisors (7774507).

54421493 is an equidigital number, since it uses as much as digits as its factorization.

54421493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7774506.

The product of its digits is 17280, while the sum is 32.

The square root of 54421493 is about 7377.0924489259. The cubic root of 54421493 is about 378.9571893731.

The spelling of 54421493 in words is "fifty-four million, four hundred twenty-one thousand, four hundred ninety-three".