45203681 has 2 divisors, whose sum is σ = 45203682. Its totient is φ = 45203680.

The previous prime is 45203657. The next prime is 45203687. The reversal of 45203681 is 18630254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44422225 + 781456 = 6665^2 + 884^2 .

It is a cyclic number.

It is not a de Polignac number, because 45203681 - 2¹⁰ = 45202657 is a prime.

It is a super-2 number, since 2×45203681² = 4086745551899522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2729720 and since 45203681 and 2729720 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (45203687) 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, 22601840 + 22601841.

It is an arithmetic number, because the mean of its divisors is an integer number (22601841).

Almost surely, 2^45203681 is an apocalyptic number.

It is an amenable number.

45203681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45203681 is an equidigital number, since it uses as much as digits as its factorization.

45203681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 45203681 is about 6723.3682778798. The cubic root of 45203681 is about 356.2251684344.

The spelling of 45203681 in words is "forty-five million, two hundred three thousand, six hundred eighty-one".