452131540 has 48 divisors (see below), whose sum is σ = 1108219392. Its totient is φ = 151716096.

The previous prime is 452131531. The next prime is 452131549. The reversal of 452131540 is 45131254.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (452131531) and next prime (452131549).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452131549) 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, 27777 + ... + 40936.

It is an arithmetic number, because the mean of its divisors is an integer number (23087904).

Almost surely, 2^452131540 is an apocalyptic number.

It is an amenable number.

452131540 is an abundant number, since it is smaller than the sum of its proper divisors (656087852).

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

452131540 is a wasteful number, since it uses less digits than its factorization.

452131540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68776 (or 68774 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 452131540 is about 21263.3849610075. The cubic root of 452131540 is about 767.5174671618.

Adding to 452131540 its reverse (45131254), we get a palindrome (497262794).

The spelling of 452131540 in words is "four hundred fifty-two million, one hundred thirty-one thousand, five hundred forty".