52173145 has 16 divisors (see below), whose sum is σ = 67688640. Its totient is φ = 38470464.

The previous prime is 52173139. The next prime is 52173157. The reversal of 52173145 is 54137125.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 52173145 - 2³ = 52173137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3907 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (4230540).

Almost surely, 2^52173145 is an apocalyptic number.

It is an amenable number.

52173145 is a deficient number, since it is larger than the sum of its proper divisors (15515495).

52173145 is a wasteful number, since it uses less digits than its factorization.

52173145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14904.

The product of its digits is 4200, while the sum is 28.

The square root of 52173145 is about 7223.0980195481. The cubic root of 52173145 is about 373.6649295763.

The spelling of 52173145 in words is "fifty-two million, one hundred seventy-three thousand, one hundred forty-five".