1956257 has 2 divisors, whose sum is σ = 1956258. Its totient is φ = 1956256.

The previous prime is 1956239. The next prime is 1956287. The reversal of 1956257 is 7526591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1515361 + 440896 = 1231^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1956257 - 2⁸ = 1956001 is a prime.

It is a d-powerful number, because it can be written as 1 + 9³ + 5 + 6 + 2¹¹ + 5⁹ + 7³ .

It is not a weakly prime, because it can be changed into another prime (1956217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978128 + 978129.

It is an arithmetic number, because the mean of its divisors is an integer number (978129).

2^1956257 is an apocalyptic number.

It is an amenable number.

1956257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1956257 is an equidigital number, since it uses as much as digits as its factorization.

1956257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18900, while the sum is 35.

The square root of 1956257 is about 1398.6625754627. The cubic root of 1956257 is about 125.0667803168.

The spelling of 1956257 in words is "one million, nine hundred fifty-six thousand, two hundred fifty-seven".