45002546221 has 4 divisors (see below), whose sum is σ = 46218831292. Its totient is φ = 43786261152.

The previous prime is 45002546179. The next prime is 45002546261. The reversal of 45002546221 is 12264520054.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15285613225 + 29716932996 = 123635^2 + 172386^2 .

It is a cyclic number.

It is not a de Polignac number, because 45002546221 - 2⁷ = 45002546093 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 (45002546261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608142480 + ... + 608142553.

It is an arithmetic number, because the mean of its divisors is an integer number (11554707823).

Almost surely, 2^45002546221 is an apocalyptic number.

It is an amenable number.

45002546221 is a deficient number, since it is larger than the sum of its proper divisors (1216285071).

45002546221 is a wasteful number, since it uses less digits than its factorization.

45002546221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216285070.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 45002546221 in words is "forty-five billion, two million, five hundred forty-six thousand, two hundred twenty-one".