54375665 has 4 divisors (see below), whose sum is σ = 65250804. Its totient is φ = 43500528.

The previous prime is 54375661. The next prime is 54375677. The reversal of 54375665 is 56657345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15649936 + 38725729 = 3956^2 + 6223^2 .

It is a cyclic number.

It is not a de Polignac number, because 54375665 - 2² = 54375661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54375661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5437562 + ... + 5437571.

It is an arithmetic number, because the mean of its divisors is an integer number (16312701).

Almost surely, 2^54375665 is an apocalyptic number.

It is an amenable number.

54375665 is a deficient number, since it is larger than the sum of its proper divisors (10875139).

54375665 is a wasteful number, since it uses less digits than its factorization.

54375665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10875138.

The product of its digits is 378000, while the sum is 41.

The square root of 54375665 is about 7373.9856929614. The cubic root of 54375665 is about 378.8507870050.

The spelling of 54375665 in words is "fifty-four million, three hundred seventy-five thousand, six hundred sixty-five".