54216381 has 8 divisors (see below), whose sum is σ = 73306944. Its totient is φ = 35635040.

The previous prime is 54216361. The next prime is 54216401. The reversal of 54216381 is 18361245.

It is an interprime number because it is at equal distance from previous prime (54216361) and next prime (54216401).

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-54216381 is a prime.

It is a super-2 number, since 2×54216381² = 5878831937474322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54216361) 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, 127056 + ... + 127481.

It is an arithmetic number, because the mean of its divisors is an integer number (9163368).

Almost surely, 2^54216381 is an apocalyptic number.

It is an amenable number.

54216381 is a deficient number, since it is larger than the sum of its proper divisors (19090563).

54216381 is a wasteful number, since it uses less digits than its factorization.

54216381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254611.

The product of its digits is 5760, while the sum is 30.

The square root of 54216381 is about 7363.1773712169. The cubic root of 54216381 is about 378.4804994994.

The spelling of 54216381 in words is "fifty-four million, two hundred sixteen thousand, three hundred eighty-one".