545386 has 4 divisors (see below), whose sum is σ = 818082. Its totient is φ = 272692.

The previous prime is 545371. The next prime is 545387. The reversal of 545386 is 683545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683545 = 5 ⋅136709.

It can be written as a sum of positive squares in only one way, i.e., 534361 + 11025 = 731^2 + 105^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (545387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136345 + ... + 136348.

2⁵⁴⁵³⁸⁶ is an apocalyptic number.

545386 is a deficient number, since it is larger than the sum of its proper divisors (272696).

545386 is a wasteful number, since it uses less digits than its factorization.

545386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272695.

The product of its digits is 14400, while the sum is 31.

The square root of 545386 is about 738.5025389259. The cubic root of 545386 is about 81.7023713560.

The spelling of 545386 in words is "five hundred forty-five thousand, three hundred eighty-six".