545405 has 8 divisors (see below), whose sum is σ = 748032. Its totient is φ = 373968.

The previous prime is 545387. The next prime is 545429. The reversal of 545405 is 504545.

545405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545405 - 2¹² = 541309 is a prime.

It is a super-2 number, since 2×545405² = 594933228050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7757 + ... + 7826.

It is an arithmetic number, because the mean of its divisors is an integer number (93504).

2⁵⁴⁵⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

545405 is a deficient number, since it is larger than the sum of its proper divisors (202627).

545405 is a wasteful number, since it uses less digits than its factorization.

545405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15595.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 545405 is about 738.5154026830. The cubic root of 545405 is about 81.7033201195.

It can be divided in two parts, 54540 and 5, that added together give a palindrome (54545).

The spelling of 545405 in words is "five hundred forty-five thousand, four hundred five".