4078513 has 2 divisors, whose sum is σ = 4078514. Its totient is φ = 4078512.

The previous prime is 4078511. The next prime is 4078523. The reversal of 4078513 is 3158704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2396304 + 1682209 = 1548^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 4078513 - 2¹ = 4078511 is a prime.

Together with 4078511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4078511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2039256 + 2039257.

It is an arithmetic number, because the mean of its divisors is an integer number (2039257).

Almost surely, 2^4078513 is an apocalyptic number.

It is an amenable number.

4078513 is a deficient number, since it is larger than the sum of its proper divisors (1).

4078513 is an equidigital number, since it uses as much as digits as its factorization.

4078513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 4078513 is about 2019.5328667788. The cubic root of 4078513 is about 159.7719798845.

The spelling of 4078513 in words is "four million, seventy-eight thousand, five hundred thirteen".