545213986 has 4 divisors (see below), whose sum is σ = 817820982. Its totient is φ = 272606992.

The previous prime is 545213983. The next prime is 545213989. The reversal of 545213986 is 689312545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689312545 = 5 ⋅137862509.

It is an interprime number because it is at equal distance from previous prime (545213983) and next prime (545213989).

It can be written as a sum of positive squares in only one way, i.e., 388838961 + 156375025 = 19719^2 + 12505^2 .

It is not an unprimeable number, because it can be changed into a prime (545213983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136303495 + ... + 136303498.

Almost surely, 2^545213986 is an apocalyptic number.

545213986 is a deficient number, since it is larger than the sum of its proper divisors (272606996).

545213986 is a wasteful number, since it uses less digits than its factorization.

545213986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272606995.

The product of its digits is 259200, while the sum is 43.

The square root of 545213986 is about 23349.8176866544. The cubic root of 545213986 is about 816.9378084734.

It can be divided in two parts, 5452139 and 86, that added together give a square (5452225 = 2335²).

The spelling of 545213986 in words is "five hundred forty-five million, two hundred thirteen thousand, nine hundred eighty-six".