1252191 has 16 divisors (see below), whose sum is σ = 1778400. Its totient is φ = 782208.

The previous prime is 1252187. The next prime is 1252193. The reversal of 1252191 is 1912521.

It is not a de Polignac number, because 1252191 - 2² = 1252187 is a prime.

1252191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3025 + ... + 3413.

It is an arithmetic number, because the mean of its divisors is an integer number (111150).

2^1252191 is an apocalyptic number.

1252191 is a deficient number, since it is larger than the sum of its proper divisors (526209).

1252191 is a wasteful number, since it uses less digits than its factorization.

1252191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458.

The product of its digits is 180, while the sum is 21.

The square root of 1252191 is about 1119.0134047454. The cubic root of 1252191 is about 107.7846359834.

The spelling of 1252191 in words is "one million, two hundred fifty-two thousand, one hundred ninety-one".