54209081 has 8 divisors (see below), whose sum is σ = 54764424. Its totient is φ = 53656960.

The previous prime is 54209059. The next prime is 54209083. The reversal of 54209081 is 18090245.

It can be written as a sum of positive squares in 4 ways, for example, as 27994681 + 26214400 = 5291^2 + 5120^2 .

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 54209081 - 2⁶ = 54209017 is a prime.

It is a super-2 number, since 2×54209081² = 5877248925729122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54209083) 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, 45311 + ... + 46491.

It is an arithmetic number, because the mean of its divisors is an integer number (6845553).

Almost surely, 2^54209081 is an apocalyptic number.

It is an amenable number.

54209081 is a deficient number, since it is larger than the sum of its proper divisors (555343).

54209081 is a wasteful number, since it uses less digits than its factorization.

54209081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 54209081 is about 7362.6816446184. The cubic root of 54209081 is about 378.4635118190.

The spelling of 54209081 in words is "fifty-four million, two hundred nine thousand, eighty-one".