7156001 has 2 divisors, whose sum is σ = 7156002. Its totient is φ = 7156000.

The previous prime is 7155991. The next prime is 7156033. The reversal of 7156001 is 1006517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6477025 + 678976 = 2545^2 + 824^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7156001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7156091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578000 + 3578001.

It is an arithmetic number, because the mean of its divisors is an integer number (3578001).

Almost surely, 2^7156001 is an apocalyptic number.

It is an amenable number.

7156001 is a deficient number, since it is larger than the sum of its proper divisors (1).

7156001 is an equidigital number, since it uses as much as digits as its factorization.

7156001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 7156001 is about 2675.0702794506. The cubic root of 7156001 is about 192.7037343754.

The spelling of 7156001 in words is "seven million, one hundred fifty-six thousand, one".