54215081 has 4 divisors (see below), whose sum is σ = 54721872. Its totient is φ = 53708292.

The previous prime is 54215069. The next prime is 54215087. The reversal of 54215081 is 18051245.

54215081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 54215081 - 2¹⁸ = 53952937 is a prime.

It is a super-2 number, since 2×54215081² = 5878550015673122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54215081.

It is not an unprimeable number, because it can be changed into a prime (54215087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253235 + ... + 253448.

It is an arithmetic number, because the mean of its divisors is an integer number (13680468).

Almost surely, 2^54215081 is an apocalyptic number.

It is an amenable number.

54215081 is a deficient number, since it is larger than the sum of its proper divisors (506791).

54215081 is a wasteful number, since it uses less digits than its factorization.

54215081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506790.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 54215081 is about 7363.0890935802. The cubic root of 54215081 is about 378.4774744076.

The spelling of 54215081 in words is "fifty-four million, two hundred fifteen thousand, eighty-one".