7021057 has 2 divisors, whose sum is σ = 7021058. Its totient is φ = 7021056.

The previous prime is 7021033. The next prime is 7021073. The reversal of 7021057 is 7501207.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6754801 + 266256 = 2599^2 + 516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7021057 is a prime.

It is not a weakly prime, because it can be changed into another prime (7021457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510528 + 3510529.

It is an arithmetic number, because the mean of its divisors is an integer number (3510529).

Almost surely, 2^7021057 is an apocalyptic number.

It is an amenable number.

7021057 is a deficient number, since it is larger than the sum of its proper divisors (1).

7021057 is an equidigital number, since it uses as much as digits as its factorization.

7021057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 7021057 is about 2649.7277218612. The cubic root of 7021057 is about 191.4847386075.

The spelling of 7021057 in words is "seven million, twenty-one thousand, fifty-seven".