45721827 has 10 divisors (see below), whose sum is σ = 68300628. Its totient is φ = 30481164.

The previous prime is 45721813. The next prime is 45721829. The reversal of 45721827 is 72812754.

45721827 is a `hidden beast` number, since 4 + 572 + 1 + 82 + 7 = 666.

It is not a de Polignac number, because 45721827 - 2⁴ = 45721811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45721791 and 45721800.

It is not an unprimeable number, because it can be changed into a prime (45721829) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 282153 + ... + 282314.

Almost surely, 2^45721827 is an apocalyptic number.

45721827 is a deficient number, since it is larger than the sum of its proper divisors (22578801).

45721827 is an equidigital number, since it uses as much as digits as its factorization.

45721827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564479 (or 564470 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 45721827 is about 6761.7917004297. The cubic root of 45721827 is about 357.5810747383.

The spelling of 45721827 in words is "forty-five million, seven hundred twenty-one thousand, eight hundred twenty-seven".