53317405 has 4 divisors (see below), whose sum is σ = 63980892. Its totient is φ = 42653920.

The previous prime is 53317387. The next prime is 53317409. The reversal of 53317405 is 50471335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50471335 = 5 ⋅10094267.

It can be written as a sum of positive squares in 2 ways, for example, as 31843449 + 21473956 = 5643^2 + 4634^2 .

It is not a de Polignac number, because 53317405 - 2⁵ = 53317373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53317409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5331736 + ... + 5331745.

It is an arithmetic number, because the mean of its divisors is an integer number (15995223).

Almost surely, 2^53317405 is an apocalyptic number.

It is an amenable number.

53317405 is a deficient number, since it is larger than the sum of its proper divisors (10663487).

53317405 is a wasteful number, since it uses less digits than its factorization.

53317405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10663486.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 53317405 is about 7301.8768135323. The cubic root of 53317405 is about 376.3769349824.

It can be divided in two parts, 5331740 and 5, that added together give a triangular number (5331745 = T₃₂₆₅).

The spelling of 53317405 in words is "fifty-three million, three hundred seventeen thousand, four hundred five".