45554021 has 8 divisors (see below), whose sum is σ = 46063320. Its totient is φ = 45047808.

The previous prime is 45554009. The next prime is 45554081. The reversal of 45554021 is 12045554.

It can be written as a sum of positive squares in 4 ways, for example, as 6002500 + 39551521 = 2450^2 + 6289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45554021 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 (45554081) 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, 39785 + ... + 40913.

It is an arithmetic number, because the mean of its divisors is an integer number (5757915).

Almost surely, 2^45554021 is an apocalyptic number.

It is an amenable number.

45554021 is a deficient number, since it is larger than the sum of its proper divisors (509299).

45554021 is a wasteful number, since it uses less digits than its factorization.

45554021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 45554021 is about 6749.3718967027. The cubic root of 45554021 is about 357.1430796418.

Adding to 45554021 its reverse (12045554), we get a palindrome (57599575).

The spelling of 45554021 in words is "forty-five million, five hundred fifty-four thousand, twenty-one".