54400065 has 16 divisors (see below), whose sum is σ = 88516800. Its totient is φ = 28521152.

The previous prime is 54400057. The next prime is 54400067. The reversal of 54400065 is 56000445.

It is a cyclic number.

It is not a de Polignac number, because 54400065 - 2³ = 54400057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (54400067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29850 + ... + 31619.

It is an arithmetic number, because the mean of its divisors is an integer number (5532300).

Almost surely, 2^54400065 is an apocalyptic number.

It is an amenable number.

54400065 is a deficient number, since it is larger than the sum of its proper divisors (34116735).

54400065 is a wasteful number, since it uses less digits than its factorization.

54400065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61536.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 54400065 is about 7375.6399722329. The cubic root of 54400065 is about 378.9074457871.

Subtracting from 54400065 its product of nonzero digits (2400), we obtain a triangular number (54397665 = T₁₀₄₃₀).

The spelling of 54400065 in words is "fifty-four million, four hundred thousand, sixty-five".