45021210 has 64 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 11013120.

The previous prime is 45021209. The next prime is 45021211. The reversal of 45021210 is 1212054.

It is an interprime number because it is at equal distance from previous prime (45021209) and next prime (45021211).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 45021210.

It is not an unprimeable number, because it can be changed into a prime (45021211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93751 + ... + 94229.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^45021210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58544640).

45021210 is an abundant number, since it is smaller than the sum of its proper divisors (72068070).

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

45021210 is a wasteful number, since it uses less digits than its factorization.

45021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 45021210 is about 6709.7846463206. The cubic root of 45021210 is about 355.7452044174.

Adding to 45021210 its reverse (1212054), we get a palindrome (46233264).

The spelling of 45021210 in words is "forty-five million, twenty-one thousand, two hundred ten".