452421520 has 40 divisors (see below), whose sum is σ = 1067592384. Its totient is φ = 178265472.

The previous prime is 452421491. The next prime is 452421553. The reversal of 452421520 is 25124254.

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

It is a super-2 number, since 2×452421520² = 409370463518220800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36844 + ... + 47563.

Almost surely, 2^452421520 is an apocalyptic number.

452421520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452421520 is an abundant number, since it is smaller than the sum of its proper divisors (615170864).

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

452421520 is a wasteful number, since it uses less digits than its factorization.

452421520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84487 (or 84481 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 452421520 is about 21270.2026318510. The cubic root of 452421520 is about 767.6815176138.

Adding to 452421520 its reverse (25124254), we get a palindrome (477545774).

The spelling of 452421520 in words is "four hundred fifty-two million, four hundred twenty-one thousand, five hundred twenty".