45435421 has 4 divisors (see below), whose sum is σ = 46543644. Its totient is φ = 44327200.

The previous prime is 45435413. The next prime is 45435427. The reversal of 45435421 is 12453454.

45435421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10329796 + 35105625 = 3214^2 + 5925^2 .

It is a cyclic number.

It is not a de Polignac number, because 45435421 - 2³ = 45435413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45435421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45435427) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 554050 + ... + 554131.

It is an arithmetic number, because the mean of its divisors is an integer number (11635911).

Almost surely, 2^45435421 is an apocalyptic number.

45435421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45435421 is a deficient number, since it is larger than the sum of its proper divisors (1108223).

45435421 is a wasteful number, since it uses less digits than its factorization.

45435421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108222.

The product of its digits is 9600, while the sum is 28.

The square root of 45435421 is about 6740.5801679084. The cubic root of 45435421 is about 356.8328693276.

Adding to 45435421 its reverse (12453454), we get a palindrome (57888875).

The spelling of 45435421 in words is "forty-five million, four hundred thirty-five thousand, four hundred twenty-one".