53405405 has 16 divisors (see below), whose sum is σ = 66699264. Its totient is φ = 41005440.

The previous prime is 53405399. The next prime is 53405459. The reversal of 53405405 is 50450435.

It is a de Polignac number, because none of the positive numbers 2^k-53405405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18329 + ... + 21041.

It is an arithmetic number, because the mean of its divisors is an integer number (4168704).

Almost surely, 2^53405405 is an apocalyptic number.

It is an amenable number.

53405405 is a deficient number, since it is larger than the sum of its proper divisors (13293859).

53405405 is a wasteful number, since it uses less digits than its factorization.

53405405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 53405405 is about 7307.9001772055. The cubic root of 53405405 is about 376.5838903214.

The spelling of 53405405 in words is "fifty-three million, four hundred five thousand, four hundred five".