54756221 has 8 divisors (see below), whose sum is σ = 59026464. Its totient is φ = 50494320.

The previous prime is 54756211. The next prime is 54756227. The reversal of 54756221 is 12265745.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54756221 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 (54756227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21506 + ... + 23916.

It is an arithmetic number, because the mean of its divisors is an integer number (7378308).

Almost surely, 2^54756221 is an apocalyptic number.

It is an amenable number.

54756221 is a deficient number, since it is larger than the sum of its proper divisors (4270243).

54756221 is a wasteful number, since it uses less digits than its factorization.

54756221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its digits is 16800, while the sum is 32.

The square root of 54756221 is about 7399.7446577568. The cubic root of 54756221 is about 379.7325472618.

The spelling of 54756221 in words is "fifty-four million, seven hundred fifty-six thousand, two hundred twenty-one".