52121173 has 4 divisors (see below), whose sum is σ = 56130508. Its totient is φ = 48111840.

The previous prime is 52121143. The next prime is 52121177. The reversal of 52121173 is 37112125.

It is a happy number.

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 11135569 + 40985604 = 3337^2 + 6402^2 .

It is a cyclic number.

It is not a de Polignac number, because 52121173 - 2⁵ = 52121141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2004648 + ... + 2004673.

It is an arithmetic number, because the mean of its divisors is an integer number (14032627).

Almost surely, 2^52121173 is an apocalyptic number.

It is an amenable number.

52121173 is a deficient number, since it is larger than the sum of its proper divisors (4009335).

52121173 is a wasteful number, since it uses less digits than its factorization.

52121173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009334.

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

The square root of 52121173 is about 7219.4994978876. The cubic root of 52121173 is about 373.5408135794.

Adding to 52121173 its reverse (37112125), we get a palindrome (89233298).

It can be divided in two parts, 521211 and 73, that added together give a square (521284 = 722²).

The spelling of 52121173 in words is "fifty-two million, one hundred twenty-one thousand, one hundred seventy-three".