1026251 has 2 divisors, whose sum is σ = 1026252. Its totient is φ = 1026250.

The previous prime is 1026229. The next prime is 1026253. The reversal of 1026251 is 1526201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1026251 is a prime.

It is a super-2 number, since 2×1026251² = 2106382230002, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1026253, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₈₀₄₃₂ and since 1026251 and 80432 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1026253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513125 + 513126.

It is an arithmetic number, because the mean of its divisors is an integer number (513126).

2^1026251 is an apocalyptic number.

1026251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026251 is an equidigital number, since it uses as much as digits as its factorization.

1026251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1026251 is about 1013.0404730316. The cubic root of 1026251 is about 100.8674862490.

The spelling of 1026251 in words is "one million, twenty-six thousand, two hundred fifty-one".