1066251 has 4 divisors (see below), whose sum is σ = 1421672. Its totient is φ = 710832.

The previous prime is 1066237. The next prime is 1066253. The reversal of 1066251 is 1526601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1526601 = 3 ⋅508867.

It is not a de Polignac number, because 1066251 - 2¹³ = 1058059 is a prime.

It is a super-2 number, since 2×1066251² = 2273782390002, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066253) 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 in 3 ways as a sum of consecutive naturals, for example, 177706 + ... + 177711.

It is an arithmetic number, because the mean of its divisors is an integer number (355418).

2^1066251 is an apocalyptic number.

1066251 is a deficient number, since it is larger than the sum of its proper divisors (355421).

1066251 is an equidigital number, since it uses as much as digits as its factorization.

1066251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355420.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1066251 is about 1032.5943056206. The cubic root of 1066251 is about 102.1613172078.

The spelling of 1066251 in words is "one million, sixty-six thousand, two hundred fifty-one".