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52545197 = 139378023

52545197 has 4 divisors (see below), whose sum is σ = 52923360. Its totient is φ = 52167036.

The previous prime is 52545193. The next prime is 52545211. The reversal of 52545197 is 79154525.

It is a happy number.

52545197 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52545197 - 22 = 52545193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52545197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52545193) 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, 188873 + ... + 189150.

It is an arithmetic number, because the mean of its divisors is an integer number (13230840).

Almost surely, 252545197 is an apocalyptic number.

It is an amenable number.

52545197 is a deficient number, since it is larger than the sum of its proper divisors (378163).

52545197 is a wasteful number, since it uses less digits than its factorization.

52545197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378162.

The product of its digits is 63000, while the sum is 38.

The square root of 52545197 is about 7248.8065914328. The cubic root of 52545197 is about 374.5510407836.

The spelling of 52545197 in words is "fifty-two million, five hundred forty-five thousand, one hundred ninety-seven".

Divisors: 1 139 378023 52545197