45319481 has 2 divisors, whose sum is σ = 45319482. Its totient is φ = 45319480.

The previous prime is 45319457. The next prime is 45319543. The reversal of 45319481 is 18491354.

45319481 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 can be written as a sum of positive squares in only one way, i.e., 44089600 + 1229881 = 6640^2 + 1109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45319481 is a prime.

It is a super-2 number, since 2×45319481² = 4107710716218722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45319381) 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, 22659740 + 22659741.

It is an arithmetic number, because the mean of its divisors is an integer number (22659741).

Almost surely, 2^45319481 is an apocalyptic number.

It is an amenable number.

45319481 is a deficient number, since it is larger than the sum of its proper divisors (1).

45319481 is an equidigital number, since it uses as much as digits as its factorization.

45319481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 45319481 is about 6731.9745246101. The cubic root of 45319481 is about 356.5290942725.

The spelling of 45319481 in words is "forty-five million, three hundred nineteen thousand, four hundred eighty-one".