2173957 has 2 divisors, whose sum is σ = 2173958. Its totient is φ = 2173956.

The previous prime is 2173907. The next prime is 2173967. The reversal of 2173957 is 7593712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1185921 + 988036 = 1089^2 + 994^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173957 - 2¹⁵ = 2141189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2173907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086978 + 1086979.

It is an arithmetic number, because the mean of its divisors is an integer number (1086979).

2^2173957 is an apocalyptic number.

It is an amenable number.

2173957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173957 is an equidigital number, since it uses as much as digits as its factorization.

2173957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13230, while the sum is 34.

The square root of 2173957 is about 1474.4344678554. The cubic root of 2173957 is about 129.5439046533.

The spelling of 2173957 in words is "two million, one hundred seventy-three thousand, nine hundred fifty-seven".