45886821 has 4 divisors (see below), whose sum is σ = 61182432. Its totient is φ = 30591212.

The previous prime is 45886801. The next prime is 45886849. The reversal of 45886821 is 12868854.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45886821 - 2¹⁹ = 45362533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45886801) 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, 7647801 + ... + 7647806.

It is an arithmetic number, because the mean of its divisors is an integer number (15295608).

Almost surely, 2^45886821 is an apocalyptic number.

It is an amenable number.

45886821 is a deficient number, since it is larger than the sum of its proper divisors (15295611).

45886821 is a wasteful number, since it uses less digits than its factorization.

45886821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15295610.

The product of its digits is 122880, while the sum is 42.

The square root of 45886821 is about 6773.9811780075. The cubic root of 45886821 is about 358.0106865093.

The spelling of 45886821 in words is "forty-five million, eight hundred eighty-six thousand, eight hundred twenty-one".