52021345 has 8 divisors (see below), whose sum is σ = 63305280. Its totient is φ = 41030640.

The previous prime is 52021313. The next prime is 52021369. The reversal of 52021345 is 54312025.

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

It is not a de Polignac number, because 52021345 - 2⁵ = 52021313 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72915 + ... + 73624.

It is an arithmetic number, because the mean of its divisors is an integer number (7913160).

Almost surely, 2^52021345 is an apocalyptic number.

It is an amenable number.

52021345 is a deficient number, since it is larger than the sum of its proper divisors (11283935).

52021345 is a wasteful number, since it uses less digits than its factorization.

52021345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146615.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 52021345 is about 7212.5824085413. The cubic root of 52021345 is about 373.3021794972.

The spelling of 52021345 in words is "fifty-two million, twenty-one thousand, three hundred forty-five".