545214531 has 16 divisors (see below), whose sum is σ = 770649984. Its totient is φ = 341679744.

The previous prime is 545214511. The next prime is 545214547. The reversal of 545214531 is 135412545.

It is not a de Polignac number, because 545214531 - 2¹⁷ = 545083459 is a prime.

It is a super-2 number, since 2×545214531² = 594517769627099922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545214511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38980 + ... + 51086.

It is an arithmetic number, because the mean of its divisors is an integer number (48165624).

Almost surely, 2^545214531 is an apocalyptic number.

545214531 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

545214531 is a deficient number, since it is larger than the sum of its proper divisors (225435453).

545214531 is a wasteful number, since it uses less digits than its factorization.

545214531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13010.

The product of its digits is 12000, while the sum is 30.

The square root of 545214531 is about 23349.8293569782. The cubic root of 545214531 is about 816.9380806790.

The spelling of 545214531 in words is "five hundred forty-five million, two hundred fourteen thousand, five hundred thirty-one".