54182021 has 4 divisors (see below), whose sum is σ = 55442112. Its totient is φ = 52921932.

The previous prime is 54182003. The next prime is 54182027. The reversal of 54182021 is 12028145.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54182021 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 (54182027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629981 + ... + 630066.

It is an arithmetic number, because the mean of its divisors is an integer number (13860528).

Almost surely, 2^54182021 is an apocalyptic number.

It is an amenable number.

54182021 is a deficient number, since it is larger than the sum of its proper divisors (1260091).

54182021 is a wasteful number, since it uses less digits than its factorization.

54182021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260090.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 54182021 is about 7360.8437695688. The cubic root of 54182021 is about 378.4005277397.

The spelling of 54182021 in words is "fifty-four million, one hundred eighty-two thousand, twenty-one".