4157213 has 2 divisors, whose sum is σ = 4157214. Its totient is φ = 4157212.

The previous prime is 4157201. The next prime is 4157239. The reversal of 4157213 is 3127514.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3545689 + 611524 = 1883^2 + 782^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4157213 is a prime.

It is a super-4 number, since 4×4157213⁴ (a number of 28 digits) contains 4444 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4157513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078606 + 2078607.

It is an arithmetic number, because the mean of its divisors is an integer number (2078607).

Almost surely, 2^4157213 is an apocalyptic number.

It is an amenable number.

4157213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4157213 is an equidigital number, since it uses as much as digits as its factorization.

4157213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 4157213 is about 2038.9244713819. The cubic root of 4157213 is about 160.7931064139.

The spelling of 4157213 in words is "four million, one hundred fifty-seven thousand, two hundred thirteen".