45021393 has 48 divisors (see below), whose sum is σ = 73152000. Its totient is φ = 27332640.

The previous prime is 45021391. The next prime is 45021401. The reversal of 45021393 is 39312054.

It is not a de Polignac number, because 45021393 - 2¹ = 45021391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (45021391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302083 + ... + 302231.

It is an arithmetic number, because the mean of its divisors is an integer number (1524000).

Almost surely, 2^45021393 is an apocalyptic number.

It is an amenable number.

45021393 is a deficient number, since it is larger than the sum of its proper divisors (28130607).

45021393 is a wasteful number, since it uses less digits than its factorization.

45021393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 45021393 is about 6709.7982831081. The cubic root of 45021393 is about 355.7456864220.

The spelling of 45021393 in words is "forty-five million, twenty-one thousand, three hundred ninety-three".