4921022500 has 135 divisors (see below), whose sum is σ = 11436958533. Its totient is φ = 1851960000.

The previous prime is 4921022471. The next prime is 4921022501. The reversal of 4921022500 is 52201294.

The square root of 4921022500 is 70150.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 4869527524 + 51494976 = 69782^2 + 7176^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4921022501) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 80672470 + ... + 80672530.

Almost surely, 2^4921022500 is an apocalyptic number.

4921022500 is the 70150-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4921022500

4921022500 is an abundant number, since it is smaller than the sum of its proper divisors (6515936033).

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

4921022500 is an equidigital number, since it uses as much as digits as its factorization.

4921022500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The cubic root of 4921022500 is about 1700.9248139880.

Multiplying 4921022500 by its sum of digits (25), we get a square (123025562500 = 350750²).

4921022500 divided by its sum of digits (25) gives a square (196840900 = 14030²).

Adding to 4921022500 its reverse (52201294), we get a palindrome (4973223794).

The spelling of 4921022500 in words is "four billion, nine hundred twenty-one million, twenty-two thousand, five hundred".