45811540 has 24 divisors (see below), whose sum is σ = 96856200. Its totient is φ = 18200448.

The previous prime is 45811537. The next prime is 45811573. The reversal of 45811540 is 4511854.

45811540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2304324 + 43507216 = 1518^2 + 6596^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45811499 and 45811508.

It is a congruent number.

It is an unprimeable number.

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, 4707 + ... + 10666.

It is an arithmetic number, because the mean of its divisors is an integer number (4035675).

Almost surely, 2^45811540 is an apocalyptic number.

It is an amenable number.

45811540 is an abundant number, since it is smaller than the sum of its proper divisors (51044660).

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

45811540 is a wasteful number, since it uses less digits than its factorization.

45811540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15531 (or 15529 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 45811540 is about 6768.4222681508. The cubic root of 45811540 is about 357.8147976245.

The spelling of 45811540 in words is "forty-five million, eight hundred eleven thousand, five hundred forty".