4545531 has 8 divisors (see below), whose sum is σ = 6734160. Its totient is φ = 3030336.

The previous prime is 4545521. The next prime is 4545551. The reversal of 4545531 is 1355454.

It is not a de Polignac number, because 4545531 - 2⁷ = 4545403 is a prime.

It is a super-2 number, since 2×4545531² = 41323704143922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 168353 = 4545531 / (4 + 5 + 4 + 5 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 4545495 and 4545504.

It is not an unprimeable number, because it can be changed into a prime (4545521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84150 + ... + 84203.

It is an arithmetic number, because the mean of its divisors is an integer number (841770).

Almost surely, 2^4545531 is an apocalyptic number.

4545531 is a deficient number, since it is larger than the sum of its proper divisors (2188629).

4545531 is a wasteful number, since it uses less digits than its factorization.

4545531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168362 (or 168356 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 4545531 is about 2132.0250936610. The cubic root of 4545531 is about 165.6513099772.

The spelling of 4545531 in words is "four million, five hundred forty-five thousand, five hundred thirty-one".