45066421 has 4 divisors (see below), whose sum is σ = 46165644. Its totient is φ = 43967200.

The previous prime is 45066409. The next prime is 45066443. The reversal of 45066421 is 12466054.

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 2686321 + 42380100 = 1639^2 + 6510^2 .

It is a cyclic number.

It is not a de Polignac number, because 45066421 - 2¹¹ = 45064373 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 45066421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45066121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549550 + ... + 549631.

It is an arithmetic number, because the mean of its divisors is an integer number (11541411).

Almost surely, 2^45066421 is an apocalyptic number.

45066421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45066421 is a deficient number, since it is larger than the sum of its proper divisors (1099223).

45066421 is a wasteful number, since it uses less digits than its factorization.

45066421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099222.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 45066421 is about 6713.1528360376. The cubic root of 45066421 is about 355.8642462027.

The spelling of 45066421 in words is "forty-five million, sixty-six thousand, four hundred twenty-one".