545450231 has 4 divisors (see below), whose sum is σ = 548276592. Its totient is φ = 542623872.

The previous prime is 545450201. The next prime is 545450237. The reversal of 545450231 is 132054545.

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

It is a cyclic number.

It is not a de Polignac number, because 545450231 - 2⁶ = 545450167 is a prime.

It is a super-2 number, since 2×545450231² = 595031908995906722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545450194 and 545450203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545450237) 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, 1412891 + ... + 1413276.

It is an arithmetic number, because the mean of its divisors is an integer number (137069148).

Almost surely, 2^545450231 is an apocalyptic number.

545450231 is a deficient number, since it is larger than the sum of its proper divisors (2826361).

545450231 is a wasteful number, since it uses less digits than its factorization.

545450231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826360.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 545450231 is about 23354.8759577096. The cubic root of 545450231 is about 817.0557863735.

The spelling of 545450231 in words is "five hundred forty-five million, four hundred fifty thousand, two hundred thirty-one".