45851780 has 24 divisors (see below), whose sum is σ = 103696152. Its totient is φ = 16929792.

The previous prime is 45851779. The next prime is 45851783. The reversal of 45851780 is 8715854.

It can be written as a sum of positive squares in 4 ways, for example, as 1149184 + 44702596 = 1072^2 + 6686^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (45851783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87917 + ... + 88436.

It is an arithmetic number, because the mean of its divisors is an integer number (4320673).

Almost surely, 2^45851780 is an apocalyptic number.

It is an amenable number.

45851780 is an abundant number, since it is smaller than the sum of its proper divisors (57844372).

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

45851780 is a wasteful number, since it uses less digits than its factorization.

45851780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176375 (or 176373 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 45851780 is about 6771.3942434332. The cubic root of 45851780 is about 357.9195329069.

The spelling of 45851780 in words is "forty-five million, eight hundred fifty-one thousand, seven hundred eighty".