1661252 has 12 divisors (see below), whose sum is σ = 2923200. Its totient is φ = 826056.

The previous prime is 1661251. The next prime is 1661273. The reversal of 1661252 is 2521661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (243600).

2^1661252 is an apocalyptic number.

It is an amenable number.

1661252 is a deficient number, since it is larger than the sum of its proper divisors (1261948).

1661252 is a wasteful number, since it uses less digits than its factorization.

1661252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290 (or 2288 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1661252 is about 1288.8956513233. The cubic root of 1661252 is about 118.4345749098.

The spelling of 1661252 in words is "one million, six hundred sixty-one thousand, two hundred fifty-two".