45504181 has 4 divisors (see below), whose sum is σ = 45540000. Its totient is φ = 45468364.

The previous prime is 45504167. The next prime is 45504203. The reversal of 45504181 is 18140554.

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 a de Polignac number, because none of the positive numbers 2^k-45504181 is a prime.

It is a super-2 number, since 2×45504181² = 4141260976961522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45505181) 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, 15931 + ... + 18568.

It is an arithmetic number, because the mean of its divisors is an integer number (11385000).

Almost surely, 2^45504181 is an apocalyptic number.

It is an amenable number.

45504181 is a deficient number, since it is larger than the sum of its proper divisors (35819).

45504181 is a wasteful number, since it uses less digits than its factorization.

45504181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35818.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 45504181 is about 6745.6786908361. The cubic root of 45504181 is about 357.0127837409.

The spelling of 45504181 in words is "forty-five million, five hundred four thousand, one hundred eighty-one".