45574821 has 24 divisors (see below), whose sum is σ = 68094936. Its totient is φ = 29352960.

The previous prime is 45574817. The next prime is 45574871. The reversal of 45574821 is 12847554.

45574821 is a `hidden beast` number, since 4 + 5 + 574 + 82 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 617796 + 44957025 = 786^2 + 6705^2 .

It is not a de Polignac number, because 45574821 - 2² = 45574817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45574811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41151 + ... + 42243.

It is an arithmetic number, because the mean of its divisors is an integer number (2837289).

Almost surely, 2^45574821 is an apocalyptic number.

45574821 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45574821 is a deficient number, since it is larger than the sum of its proper divisors (22520115).

45574821 is a wasteful number, since it uses less digits than its factorization.

45574821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253 (or 1250 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 45574821 is about 6750.9126049742. The cubic root of 45574821 is about 357.1974286363.

The spelling of 45574821 in words is "forty-five million, five hundred seventy-four thousand, eight hundred twenty-one".