4521252720 has 40 divisors (see below), whose sum is σ = 14015884176. Its totient is φ = 1205667328.

The previous prime is 4521252719. The next prime is 4521252727. The reversal of 4521252720 is 272521254.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521252727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9419037 + ... + 9419516.

Almost surely, 2^4521252720 is an apocalyptic number.

4521252720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4521252720 is an abundant number, since it is smaller than the sum of its proper divisors (9494631456).

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

4521252720 is a wasteful number, since it uses less digits than its factorization.

4521252720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18838569 (or 18838563 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 4521252720 is about 67240.2611535678. The cubic root of 4521252720 is about 1653.5586151714.

Adding to 4521252720 its reverse (272521254), we get a palindrome (4793773974).

The spelling of 4521252720 in words is "four billion, five hundred twenty-one million, two hundred fifty-two thousand, seven hundred twenty".