45121804 has 48 divisors (see below), whose sum is σ = 98134848. Its totient is φ = 17676288.

The previous prime is 45121787. The next prime is 45121807. The reversal of 45121804 is 40812154.

It is not an unprimeable number, because it can be changed into a prime (45121807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40584 + ... + 41680.

It is an arithmetic number, because the mean of its divisors is an integer number (2044476).

Almost surely, 2^45121804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45121804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49067424).

45121804 is an abundant number, since it is smaller than the sum of its proper divisors (53013044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45121804 is a wasteful number, since it uses less digits than its factorization.

45121804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1232 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 45121804 is about 6717.2765314523. The cubic root of 45121804 is about 356.0099626888.

Adding to 45121804 its reverse (40812154), we get a palindrome (85933958).

The spelling of 45121804 in words is "forty-five million, one hundred twenty-one thousand, eight hundred four".