545061531 has 64 divisors (see below), whose sum is σ = 935608320. Its totient is φ = 274752000.

The previous prime is 545061511. The next prime is 545061551. The reversal of 545061531 is 135160545.

It is an interprime number because it is at equal distance from previous prime (545061511) and next prime (545061551).

It is not a de Polignac number, because 545061531 - 2⁷ = 545061403 is a prime.

It is a super-2 number, since 2×545061531² = 594184145152127922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545061511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 725406 + ... + 726156.

It is an arithmetic number, because the mean of its divisors is an integer number (14618880).

Almost surely, 2^545061531 is an apocalyptic number.

545061531 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

545061531 is a deficient number, since it is larger than the sum of its proper divisors (390546789).

545061531 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (545061530) it forms an eRAP, since the sums of their prime factors are consecutive (903 and 904).

545061531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 545061531 is about 23346.5528718910. The cubic root of 545061531 is about 816.8616561936.

The spelling of 545061531 in words is "five hundred forty-five million, sixty-one thousand, five hundred thirty-one".