45155641 has 4 divisors (see below), whose sum is σ = 45289972. Its totient is φ = 45021312.

The previous prime is 45155599. The next prime is 45155659. The reversal of 45155641 is 14655154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15681600 + 29474041 = 3960^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 45155641 - 2¹⁵ = 45122873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45155681) by changing a digit.

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, 66660 + ... + 67333.

It is an arithmetic number, because the mean of its divisors is an integer number (11322493).

Almost surely, 2^45155641 is an apocalyptic number.

It is an amenable number.

45155641 is a deficient number, since it is larger than the sum of its proper divisors (134331).

45155641 is a wasteful number, since it uses less digits than its factorization.

45155641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134330.

The product of its digits is 12000, while the sum is 31.

The square root of 45155641 is about 6719.7947141263. The cubic root of 45155641 is about 356.0989314955.

It can be divided in two parts, 45155 and 641, that added together give a square (45796 = 214²).

The spelling of 45155641 in words is "forty-five million, one hundred fifty-five thousand, six hundred forty-one".