45310981 has 2 divisors, whose sum is σ = 45310982. Its totient is φ = 45310980.

The previous prime is 45310957. The next prime is 45310987. The reversal of 45310981 is 18901354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30802500 + 14508481 = 5550^2 + 3809^2 .

It is a cyclic number.

It is not a de Polignac number, because 45310981 - 2⁹ = 45310469 is a prime.

It is a super-2 number, since 2×45310981² = 4106169998364722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45310987) 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 as a sum of consecutive naturals, namely, 22655490 + 22655491.

It is an arithmetic number, because the mean of its divisors is an integer number (22655491).

Almost surely, 2^45310981 is an apocalyptic number.

It is an amenable number.

45310981 is a deficient number, since it is larger than the sum of its proper divisors (1).

45310981 is an equidigital number, since it uses as much as digits as its factorization.

45310981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 45310981 is about 6731.3431794851. The cubic root of 45310981 is about 356.5068029994.

The spelling of 45310981 in words is "forty-five million, three hundred ten thousand, nine hundred eighty-one".