52191329 has 4 divisors (see below), whose sum is σ = 53991060. Its totient is φ = 50391600.

The previous prime is 52191287. The next prime is 52191331. The reversal of 52191329 is 92319125.

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 28376929 + 23814400 = 5327^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 52191329 - 2¹⁶ = 52125793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 52191295 and 52191304.

It is not an unprimeable number, because it can be changed into a prime (52131329) 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, 899822 + ... + 899879.

It is an arithmetic number, because the mean of its divisors is an integer number (13497765).

Almost surely, 2^52191329 is an apocalyptic number.

It is an amenable number.

52191329 is a deficient number, since it is larger than the sum of its proper divisors (1799731).

52191329 is a wasteful number, since it uses less digits than its factorization.

52191329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799730.

The product of its digits is 4860, while the sum is 32.

The square root of 52191329 is about 7224.3566495571. The cubic root of 52191329 is about 373.7083359037.

The spelling of 52191329 in words is "fifty-two million, one hundred ninety-one thousand, three hundred twenty-nine".