45531572 has 6 divisors (see below), whose sum is σ = 79680258. Its totient is φ = 22765784.

The previous prime is 45531557. The next prime is 45531583. The reversal of 45531572 is 27513554.

45531572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40883236 + 4648336 = 6394^2 + 2156^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5691443 + ... + 5691450.

It is an arithmetic number, because the mean of its divisors is an integer number (13280043).

Almost surely, 2^45531572 is an apocalyptic number.

It is an amenable number.

45531572 is a deficient number, since it is larger than the sum of its proper divisors (34148686).

45531572 is a wasteful number, since it uses less digits than its factorization.

45531572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11382897 (or 11382895 counting only the distinct ones).

The product of its digits is 21000, while the sum is 32.

The square root of 45531572 is about 6747.7086481264. The cubic root of 45531572 is about 357.0844033553.

The spelling of 45531572 in words is "forty-five million, five hundred thirty-one thousand, five hundred seventy-two".