52730405 has 16 divisors (see below), whose sum is σ = 77879424. Its totient is φ = 33376320.

The previous prime is 52730401. The next prime is 52730437. The reversal of 52730405 is 50403725.

It is not a de Polignac number, because 52730405 - 2² = 52730401 is a prime.

It is a super-2 number, since 2×52730405² = 5560991222928050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52730401) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 57491 + ... + 58400.

It is an arithmetic number, because the mean of its divisors is an integer number (4867464).

Almost surely, 2^52730405 is an apocalyptic number.

It is an amenable number.

52730405 is a deficient number, since it is larger than the sum of its proper divisors (25149019).

52730405 is a wasteful number, since it uses less digits than its factorization.

52730405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115916.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 52730405 is about 7261.5704224362. The cubic root of 52730405 is about 374.9905893935.

It can be divided in two parts, 52730 and 405, that added together give a palindrome (53135).

The spelling of 52730405 in words is "fifty-two million, seven hundred thirty thousand, four hundred five".