45809855 has 48 divisors (see below), whose sum is σ = 72586080. Its totient is φ = 27433728.

The previous prime is 45809851. The next prime is 45809867. The reversal of 45809855 is 55890854.

It is not a de Polignac number, because 45809855 - 2² = 45809851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45809851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60137 + ... + 60893.

It is an arithmetic number, because the mean of its divisors is an integer number (1512210).

Almost surely, 2^45809855 is an apocalyptic number.

45809855 is a deficient number, since it is larger than the sum of its proper divisors (26776225).

45809855 is a wasteful number, since it uses less digits than its factorization.

45809855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 45809855 is about 6768.2977919119. The cubic root of 45809855 is about 357.8104106271.

It can be divided in two parts, 45809 and 855, that added together give a palindrome (46664).

The spelling of 45809855 in words is "forty-five million, eight hundred nine thousand, eight hundred fifty-five".