45291331 has 2 divisors, whose sum is σ = 45291332. Its totient is φ = 45291330.

The previous prime is 45291319. The next prime is 45291377. The reversal of 45291331 is 13319254.

45291331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45291331 - 2¹⁹ = 44767043 is a prime.

It is a super-2 number, since 2×45291331² = 4102609327503122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45291331.

It is not a weakly prime, because it can be changed into another prime (45291131) 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 as a sum of consecutive naturals, namely, 22645665 + 22645666.

It is an arithmetic number, because the mean of its divisors is an integer number (22645666).

Almost surely, 2^45291331 is an apocalyptic number.

45291331 is the 3886-th hex number.

45291331 is a deficient number, since it is larger than the sum of its proper divisors (1).

45291331 is an equidigital number, since it uses as much as digits as its factorization.

45291331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 28.

The square root of 45291331 is about 6729.8834313827. The cubic root of 45291331 is about 356.4552601472.

The spelling of 45291331 in words is "forty-five million, two hundred ninety-one thousand, three hundred thirty-one".