45551000 has 128 divisors (see below), whose sum is σ = 120294720. Its totient is φ = 16000000.

The previous prime is 45550979. The next prime is 45551027. The reversal of 45551000 is 15554.

45551000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 31 ways as a sum of consecutive naturals, for example, 450950 + ... + 451050.

Almost surely, 2^45551000 is an apocalyptic number.

45551000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45551000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60147360).

45551000 is an abundant number, since it is smaller than the sum of its proper divisors (74743720).

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

45551000 is a wasteful number, since it uses less digits than its factorization.

45551000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 45551000 is about 6749.1480943894. The cubic root of 45551000 is about 357.1351845971.

Adding to 45551000 its reverse (15554), we get a palindrome (45566554).

It can be divided in two parts, 4555 and 1000, that added together give a palindrome (5555).

The spelling of 45551000 in words is "forty-five million, five hundred fifty-one thousand".