52320146 has 8 divisors (see below), whose sum is σ = 80601420. Its totient is φ = 25453008.

The previous prime is 52320139. The next prime is 52320161. The reversal of 52320146 is 64102325.

It can be written as a sum of positive squares in 2 ways, for example, as 47761921 + 4558225 = 6911^2 + 2135^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×52320146² = 5474795354922632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353441 + ... + 353588.

Almost surely, 2^52320146 is an apocalyptic number.

52320146 is a deficient number, since it is larger than the sum of its proper divisors (28281274).

52320146 is a wasteful number, since it uses less digits than its factorization.

52320146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707068.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 52320146 is about 7233.2666202761. The cubic root of 52320146 is about 374.0155416916.

The spelling of 52320146 in words is "fifty-two million, three hundred twenty thousand, one hundred forty-six".