45765421 has 8 divisors (see below), whose sum is σ = 49504280. Its totient is φ = 42057792.

The previous prime is 45765413. The next prime is 45765427. The reversal of 45765421 is 12456754.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 45024100 = 861^2 + 6710^2 .

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 45765421 - 2³ = 45765413 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 (45765427) 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, 4710 + ... + 10663.

It is an arithmetic number, because the mean of its divisors is an integer number (6188035).

Almost surely, 2^45765421 is an apocalyptic number.

It is an amenable number.

45765421 is a deficient number, since it is larger than the sum of its proper divisors (3738859).

45765421 is a wasteful number, since it uses less digits than its factorization.

45765421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15615.

The product of its digits is 33600, while the sum is 34.

The square root of 45765421 is about 6765.0144863112. The cubic root of 45765421 is about 357.6946852296.

The spelling of 45765421 in words is "forty-five million, seven hundred sixty-five thousand, four hundred twenty-one".