1971252 has 36 divisors (see below), whose sum is σ = 5277636. Its totient is φ = 618240.

The previous prime is 1971251. The next prime is 1971253. The reversal of 1971252 is 2521791.

It is an interprime number because it is at equal distance from previous prime (1971251) and next prime (1971253).

It can be written as a sum of positive squares in 2 ways, for example, as 1527696 + 443556 = 1236^2 + 666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1971251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 999 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (146601).

2^1971252 is an apocalyptic number.

1971252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1971252 is an abundant number, since it is smaller than the sum of its proper divisors (3306384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1971252 is a wasteful number, since it uses less digits than its factorization.

1971252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3243 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 1971252 is about 1404.0128204543. The cubic root of 1971252 is about 125.3855191111.

The spelling of 1971252 in words is "one million, nine hundred seventy-one thousand, two hundred fifty-two".