54366521 has 4 divisors (see below), whose sum is σ = 59308944. Its totient is φ = 49424100.

The previous prime is 54366517. The next prime is 54366563. The reversal of 54366521 is 12566345.

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 not a de Polignac number, because 54366521 - 2² = 54366517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54366511) 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, 2471195 + ... + 2471216.

It is an arithmetic number, because the mean of its divisors is an integer number (14827236).

Almost surely, 2^54366521 is an apocalyptic number.

It is an amenable number.

54366521 is a deficient number, since it is larger than the sum of its proper divisors (4942423).

54366521 is a wasteful number, since it uses less digits than its factorization.

54366521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942422.

The product of its digits is 21600, while the sum is 32.

The square root of 54366521 is about 7373.3656494168. The cubic root of 54366521 is about 378.8295495281.

The spelling of 54366521 in words is "fifty-four million, three hundred sixty-six thousand, five hundred twenty-one".