52720170 has 16 divisors (see below), whose sum is σ = 126528480. Its totient is φ = 14058704.

The previous prime is 52720169. The next prime is 52720201. The reversal of 52720170 is 7102725.

It is a self number, because there is not a number n which added to its sum of digits gives 52720170.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 878640 + ... + 878699.

It is an arithmetic number, because the mean of its divisors is an integer number (7908030).

Almost surely, 2^52720170 is an apocalyptic number.

52720170 is an abundant number, since it is smaller than the sum of its proper divisors (73808310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52720170 is a wasteful number, since it uses less digits than its factorization.

52720170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757349.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 52720170 is about 7260.8656508711. The cubic root of 52720170 is about 374.9663258651.

Adding to 52720170 its reverse (7102725), we get a palindrome (59822895).

The spelling of 52720170 in words is "fifty-two million, seven hundred twenty thousand, one hundred seventy".