52178545 has 4 divisors (see below), whose sum is σ = 62614260. Its totient is φ = 41742832.

The previous prime is 52178543. The next prime is 52178557. The reversal of 52178545 is 54587125.

52178545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 41049649 + 11128896 = 6407^2 + 3336^2 .

It is a cyclic number.

It is not a de Polignac number, because 52178545 - 2¹ = 52178543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52178543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5217850 + ... + 5217859.

It is an arithmetic number, because the mean of its divisors is an integer number (15653565).

Almost surely, 2^52178545 is an apocalyptic number.

It is an amenable number.

52178545 is a deficient number, since it is larger than the sum of its proper divisors (10435715).

52178545 is a wasteful number, since it uses less digits than its factorization.

52178545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10435714.

The product of its digits is 56000, while the sum is 37.

The square root of 52178545 is about 7223.4718107016. The cubic root of 52178545 is about 373.6778207614.

The spelling of 52178545 in words is "fifty-two million, one hundred seventy-eight thousand, five hundred forty-five".