547405 has 4 divisors (see below), whose sum is σ = 656892. Its totient is φ = 437920.

The previous prime is 547399. The next prime is 547411. The reversal of 547405 is 504745.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (547399) and next prime (547411).

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 413449 = 366^2 + 643^2 .

It is not a de Polignac number, because 547405 - 2³ = 547397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 547405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54736 + ... + 54745.

It is an arithmetic number, because the mean of its divisors is an integer number (164223).

2⁵⁴⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

547405 is a deficient number, since it is larger than the sum of its proper divisors (109487).

547405 is a wasteful number, since it uses less digits than its factorization.

547405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109486.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 547405 is about 739.8682315115. The cubic root of 547405 is about 81.8030669797.

It can be divided in two parts, 54740 and 5, that added together give a palindrome (54745).

The spelling of 547405 in words is "five hundred forty-seven thousand, four hundred five".