45391061 has 4 divisors (see below), whose sum is σ = 46956300. Its totient is φ = 43825824.

The previous prime is 45391051. The next prime is 45391063. The reversal of 45391061 is 16019354.

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 16564900 + 28826161 = 4070^2 + 5369^2 .

It is a cyclic number.

It is not a de Polignac number, because 45391061 - 2⁶ = 45390997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1565209 = 45391061 / (4 + 5 + 3 + 9 + 1 + 0 + 6 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45391063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 782576 + ... + 782633.

It is an arithmetic number, because the mean of its divisors is an integer number (11739075).

Almost surely, 2^45391061 is an apocalyptic number.

It is an amenable number.

45391061 is a deficient number, since it is larger than the sum of its proper divisors (1565239).

45391061 is a wasteful number, since it uses less digits than its factorization.

45391061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1565238.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 45391061 is about 6737.2888464129. The cubic root of 45391061 is about 356.7167025425.

The spelling of 45391061 in words is "forty-five million, three hundred ninety-one thousand, sixty-one".