45215500 has 48 divisors (see below), whose sum is σ = 107741088. Its totient is φ = 16440000.

The previous prime is 45215491. The next prime is 45215503. The reversal of 45215500 is 551254.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45215503) 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, 1390 + ... + 9610.

It is an arithmetic number, because the mean of its divisors is an integer number (2244606).

Almost surely, 2^45215500 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 45215500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53870544).

45215500 is an abundant number, since it is smaller than the sum of its proper divisors (62525588).

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

45215500 is a wasteful number, since it uses less digits than its factorization.

45215500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8251 (or 8239 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 45215500 is about 6724.2471697581. The cubic root of 45215500 is about 356.2562120595.

Adding to 45215500 its reverse (551254), we get a palindrome (45766754).

The spelling of 45215500 in words is "forty-five million, two hundred fifteen thousand, five hundred".