54951221 has 8 divisors (see below), whose sum is σ = 59754240. Its totient is φ = 50230512.

The previous prime is 54951203. The next prime is 54951223. The reversal of 54951221 is 12215945.

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-54951221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54951223) 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, 19181 + ... + 21858.

It is an arithmetic number, because the mean of its divisors is an integer number (7469280).

Almost surely, 2^54951221 is an apocalyptic number.

It is an amenable number.

54951221 is a deficient number, since it is larger than the sum of its proper divisors (4803019).

54951221 is a wasteful number, since it uses less digits than its factorization.

54951221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41155.

The product of its digits is 3600, while the sum is 29.

The square root of 54951221 is about 7412.9090780880. The cubic root of 54951221 is about 380.1827860241.

The spelling of 54951221 in words is "fifty-four million, nine hundred fifty-one thousand, two hundred twenty-one".