5146721 has 2 divisors, whose sum is σ = 5146722. Its totient is φ = 5146720.

The previous prime is 5146711. The next prime is 5146727. The reversal of 5146721 is 1276415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5125696 + 21025 = 2264^2 + 145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5146721 is a prime.

It is not a weakly prime, because it can be changed into another prime (5146727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2573360 + 2573361.

It is an arithmetic number, because the mean of its divisors is an integer number (2573361).

Almost surely, 2^5146721 is an apocalyptic number.

It is an amenable number.

5146721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5146721 is an equidigital number, since it uses as much as digits as its factorization.

5146721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 5146721 is about 2268.6385785312. The cubic root of 5146721 is about 172.6540918146.

The spelling of 5146721 in words is "five million, one hundred forty-six thousand, seven hundred twenty-one".