1453404520 has 32 divisors (see below), whose sum is σ = 3271703400. Its totient is φ = 581087488.

The previous prime is 1453404517. The next prime is 1453404529. The reversal of 1453404520 is 254043541.

It can be written as a sum of positive squares in 4 ways, for example, as 1244255076 + 209149444 = 35274^2 + 14462^2 .

It is a super-2 number, since 2×1453404520² = 4224769397512860800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1453404529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91746 + ... + 106414.

Almost surely, 2^1453404520 is an apocalyptic number.

1453404520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1453404520 is an abundant number, since it is smaller than the sum of its proper divisors (1818298880).

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

1453404520 is a wasteful number, since it uses less digits than its factorization.

1453404520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17157 (or 17153 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 1453404520 is about 38123.5428573998. The cubic root of 1453404520 is about 1132.7363449507.

The spelling of 1453404520 in words is "one billion, four hundred fifty-three million, four hundred four thousand, five hundred twenty".