2451445540 has 12 divisors (see below), whose sum is σ = 5148035676. Its totient is φ = 980578208.

The previous prime is 2451445519. The next prime is 2451445541. The reversal of 2451445540 is 455441542.

It can be written as a sum of positive squares in 2 ways, for example, as 886610176 + 1564835364 = 29776^2 + 39558^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2451445496 and 2451445505.

It is not an unprimeable number, because it can be changed into a prime (2451445541) 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 3 ways as a sum of consecutive naturals, for example, 61286119 + ... + 61286158.

It is an arithmetic number, because the mean of its divisors is an integer number (429002973).

Almost surely, 2^2451445540 is an apocalyptic number.

2451445540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2451445540 is an abundant number, since it is smaller than the sum of its proper divisors (2696590136).

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

2451445540 is a wasteful number, since it uses less digits than its factorization.

2451445540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122572286 (or 122572284 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 34.

The square root of 2451445540 is about 49512.0746889080. The cubic root of 2451445540 is about 1348.3648313814.

The spelling of 2451445540 in words is "two billion, four hundred fifty-one million, four hundred forty-five thousand, five hundred forty".