45445261 has 8 divisors (see below), whose sum is σ = 46985400. Its totient is φ = 43925760.

The previous prime is 45445259. The next prime is 45445271. The reversal of 45445261 is 16254454.

It is a happy number.

45445261 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 9517225 + 35928036 = 3085^2 + 5994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45445261 - 2¹ = 45445259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45445241) by changing a digit.

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, 616 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (5873175).

Almost surely, 2^45445261 is an apocalyptic number.

45445261 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45445261 is a deficient number, since it is larger than the sum of its proper divisors (1540139).

45445261 is a wasteful number, since it uses less digits than its factorization.

45445261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its digits is 19200, while the sum is 31.

The square root of 45445261 is about 6741.3100358907. The cubic root of 45445261 is about 356.8586273662.

The spelling of 45445261 in words is "forty-five million, four hundred forty-five thousand, two hundred sixty-one".