45021004 has 18 divisors (see below), whose sum is σ = 91650300. Its totient is φ = 19294632.

The previous prime is 45020951. The next prime is 45021007. The reversal of 45021004 is 40012054.

It is not an unprimeable number, because it can be changed into a prime (45021007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114654 + ... + 115045.

Almost surely, 2^45021004 is an apocalyptic number.

It is an amenable number.

45021004 is an abundant number, since it is smaller than the sum of its proper divisors (46629296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45021004 is a wasteful number, since it uses less digits than its factorization.

45021004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229717 (or 229708 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 45021004 is about 6709.7692955868. The cubic root of 45021004 is about 355.7446618315.

Adding to 45021004 its reverse (40012054), we get a palindrome (85033058).

The spelling of 45021004 in words is "forty-five million, twenty-one thousand, four".