45261220 has 12 divisors (see below), whose sum is σ = 95048604. Its totient is φ = 18104480.

The previous prime is 45261197. The next prime is 45261239. The reversal of 45261220 is 2216254.

It can be written as a sum of positive squares in 2 ways, for example, as 20738916 + 24522304 = 4554^2 + 4952^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45261191 and 45261200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131511 + ... + 1131550.

It is an arithmetic number, because the mean of its divisors is an integer number (7920717).

Almost surely, 2^45261220 is an apocalyptic number.

It is an amenable number.

45261220 is an abundant number, since it is smaller than the sum of its proper divisors (49787384).

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

45261220 is a wasteful number, since it uses less digits than its factorization.

45261220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263070 (or 2263068 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 45261220 is about 6727.6459478781. The cubic root of 45261220 is about 356.3762486780.

Adding to 45261220 its reverse (2216254), we get a palindrome (47477474).

The spelling of 45261220 in words is "forty-five million, two hundred sixty-one thousand, two hundred twenty".