40282513 has 2 divisors, whose sum is σ = 40282514. Its totient is φ = 40282512.

The previous prime is 40282511. The next prime is 40282523. The reversal of 40282513 is 31528204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28912129 + 11370384 = 5377^2 + 3372^2 .

It is a cyclic number.

It is not a de Polignac number, because 40282513 - 2¹ = 40282511 is a prime.

Together with 40282511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40282511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20141256 + 20141257.

It is an arithmetic number, because the mean of its divisors is an integer number (20141257).

Almost surely, 2^40282513 is an apocalyptic number.

It is an amenable number.

40282513 is a deficient number, since it is larger than the sum of its proper divisors (1).

40282513 is an equidigital number, since it uses as much as digits as its factorization.

40282513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40282513 is about 6346.8506363393. The cubic root of 40282513 is about 342.7984519164.

The spelling of 40282513 in words is "forty million, two hundred eighty-two thousand, five hundred thirteen".