54161545 has 4 divisors (see below), whose sum is σ = 64993860. Its totient is φ = 43329232.

The previous prime is 54161539. The next prime is 54161593. The reversal of 54161545 is 54516145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54516145 = 5 ⋅10903229.

It can be written as a sum of positive squares in 2 ways, for example, as 39200121 + 14961424 = 6261^2 + 3868^2 .

It is a cyclic number.

It is not a de Polignac number, because 54161545 - 2²¹ = 52064393 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5416150 + ... + 5416159.

It is an arithmetic number, because the mean of its divisors is an integer number (16248465).

Almost surely, 2^54161545 is an apocalyptic number.

It is an amenable number.

54161545 is a deficient number, since it is larger than the sum of its proper divisors (10832315).

54161545 is a wasteful number, since it uses less digits than its factorization.

54161545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832314.

The product of its digits is 12000, while the sum is 31.

The square root of 54161545 is about 7359.4527649819. The cubic root of 54161545 is about 378.3528544506.

The spelling of 54161545 in words is "fifty-four million, one hundred sixty-one thousand, five hundred forty-five".