454252520 has 64 divisors (see below), whose sum is σ = 1063314000. Its totient is φ = 174440448.

The previous prime is 454252511. The next prime is 454252523. The reversal of 454252520 is 25252454.

It can be written as a sum of positive squares in 8 ways, for example, as 296046436 + 158206084 = 17206^2 + 12578^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (454252523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222866 + ... + 224894.

Almost surely, 2^454252520 is an apocalyptic number.

454252520 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 454252520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531657000).

454252520 is an abundant number, since it is smaller than the sum of its proper divisors (609061480).

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

454252520 is a wasteful number, since it uses less digits than its factorization.

454252520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 454252520 is about 21313.2006043203. The cubic root of 454252520 is about 768.7157543517.

The spelling of 454252520 in words is "four hundred fifty-four million, two hundred fifty-two thousand, five hundred twenty".