52020405 has 12 divisors (see below), whose sum is σ = 90168780. Its totient is φ = 27744192.

The previous prime is 52020383. The next prime is 52020413. The reversal of 52020405 is 50402025.

52020405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27279729 + 24740676 = 5223^2 + 4974^2 .

It is not a de Polignac number, because 52020405 - 2⁸ = 52020149 is a prime.

It is a super-2 number, since 2×52020405² = 5412245072728050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577960 + ... + 578049.

It is an arithmetic number, because the mean of its divisors is an integer number (7514065).

Almost surely, 2^52020405 is an apocalyptic number.

It is an amenable number.

52020405 is a deficient number, since it is larger than the sum of its proper divisors (38148375).

52020405 is a wasteful number, since it uses less digits than its factorization.

52020405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156020 (or 1156017 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 52020405 is about 7212.5172443468. The cubic root of 52020405 is about 373.2999310216.

It can be divided in two parts, 52020 and 405, that multiplied together give a square (21068100 = 4590²).

The spelling of 52020405 in words is "fifty-two million, twenty thousand, four hundred five".