452321520 has 160 divisors (see below), whose sum is σ = 1609563648. Its totient is φ = 102933504.

The previous prime is 452321501. The next prime is 452321537. The reversal of 452321520 is 25123254.

It is a super-2 number, since 2×452321520² = 409189514910220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515322 + ... + 516198.

Almost surely, 2^452321520 is an apocalyptic number.

452321520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 452321520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (804781824).

452321520 is an abundant number, since it is smaller than the sum of its proper divisors (1157242128).

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

452321520 is a wasteful number, since it uses less digits than its factorization.

452321520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 452321520 is about 21267.8517956093. The cubic root of 452321520 is about 767.6249525116.

452321520 divided by its sum of digits (24) gives a triangular number (18846730 = T₆₁₃₉).

Adding to 452321520 its reverse (25123254), we get a palindrome (477444774).

The spelling of 452321520 in words is "four hundred fifty-two million, three hundred twenty-one thousand, five hundred twenty".