45531028 has 24 divisors (see below), whose sum is σ = 81570888. Its totient is φ = 22229376.

The previous prime is 45531019. The next prime is 45531029. The reversal of 45531028 is 82013554.

It can be written as a sum of positive squares in 4 ways, for example, as 36216324 + 9314704 = 6018^2 + 3052^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45530987 and 45531005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45531029) 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, 61750 + ... + 62482.

It is an arithmetic number, because the mean of its divisors is an integer number (3398787).

Almost surely, 2^45531028 is an apocalyptic number.

It is an amenable number.

45531028 is a deficient number, since it is larger than the sum of its proper divisors (36039860).

45531028 is a wasteful number, since it uses less digits than its factorization.

45531028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 45531028 is about 6747.6683380261. The cubic root of 45531028 is about 357.0829812308.

The spelling of 45531028 in words is "forty-five million, five hundred thirty-one thousand, twenty-eight".