52173121 has 16 divisors (see below), whose sum is σ = 70051968. Its totient is φ = 37526400.

The previous prime is 52173109. The next prime is 52173133. The reversal of 52173121 is 12137125.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (52173109) and next prime (52173133).

It is a cyclic number.

It is not a de Polignac number, because 52173121 - 2⁵ = 52173089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52173092 and 52173101.

It is not an unprimeable number, because it can be changed into a prime (52173161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25060 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (4378248).

Almost surely, 2^52173121 is an apocalyptic number.

It is an amenable number.

52173121 is a deficient number, since it is larger than the sum of its proper divisors (17878847).

52173121 is a wasteful number, since it uses less digits than its factorization.

52173121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52152.

The product of its digits is 420, while the sum is 22.

The square root of 52173121 is about 7223.0963582109. The cubic root of 52173121 is about 373.6648722801.

It can be divided in two parts, 5217 and 3121, that added together give a palindrome (8338).

The spelling of 52173121 in words is "fifty-two million, one hundred seventy-three thousand, one hundred twenty-one".