45036421 has 8 divisors (see below), whose sum is σ = 45846360. Its totient is φ = 44233728.

The previous prime is 45036419. The next prime is 45036457. The reversal of 45036421 is 12463054.

It can be written as a sum of positive squares in 4 ways, for example, as 19483396 + 25553025 = 4414^2 + 5055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45036421 - 2¹ = 45036419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45036721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11595 + ... + 14983.

It is an arithmetic number, because the mean of its divisors is an integer number (5730795).

Almost surely, 2^45036421 is an apocalyptic number.

It is an amenable number.

45036421 is a deficient number, since it is larger than the sum of its proper divisors (809939).

45036421 is a wasteful number, since it uses less digits than its factorization.

45036421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 45036421 is about 6710.9180445003. The cubic root of 45036421 is about 355.7852642840.

Adding to 45036421 its reverse (12463054), we get a palindrome (57499475).

The spelling of 45036421 in words is "forty-five million, thirty-six thousand, four hundred twenty-one".