54081561 has 8 divisors (see below), whose sum is σ = 72823104. Its totient is φ = 35697200.

The previous prime is 54081557. The next prime is 54081589. The reversal of 54081561 is 16518045.

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

It is a cyclic number.

It is not a de Polignac number, because 54081561 - 2² = 54081557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54081361) 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, 88941 + ... + 89546.

It is an arithmetic number, because the mean of its divisors is an integer number (9102888).

Almost surely, 2^54081561 is an apocalyptic number.

It is an amenable number.

54081561 is a deficient number, since it is larger than the sum of its proper divisors (18741543).

54081561 is a wasteful number, since it uses less digits than its factorization.

54081561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178591.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 54081561 is about 7354.0166575824. The cubic root of 54081561 is about 378.1665163167.

The spelling of 54081561 in words is "fifty-four million, eighty-one thousand, five hundred sixty-one".