45405321 has 16 divisors (see below), whose sum is σ = 65780736. Its totient is φ = 27691776.

The previous prime is 45405313. The next prime is 45405341. The reversal of 45405321 is 12350454.

It is not a de Polignac number, because 45405321 - 2³ = 45405313 is a prime.

It is a super-2 number, since 2×45405321² = 4123286350226082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 45405291 and 45405300.

It is not an unprimeable number, because it can be changed into a prime (45405341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745 + ... + 9558.

It is an arithmetic number, because the mean of its divisors is an integer number (4111296).

Almost surely, 2^45405321 is an apocalyptic number.

It is an amenable number.

45405321 is a deficient number, since it is larger than the sum of its proper divisors (20375415).

45405321 is a wasteful number, since it uses less digits than its factorization.

45405321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10432.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 45405321 is about 6738.3470525048. The cubic root of 45405321 is about 356.7540538585.

Adding to 45405321 its reverse (12350454), we get a palindrome (57755775).

The spelling of 45405321 in words is "forty-five million, four hundred five thousand, three hundred twenty-one".