391252 has 6 divisors (see below), whose sum is σ = 684698. Its totient is φ = 195624.

The previous prime is 391249. The next prime is 391273. The reversal of 391252 is 252193.

It can be written as a sum of positive squares in only one way, i.e., 352836 + 38416 = 594^2 + 196^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48903 + ... + 48910.

2³⁹¹²⁵² is an apocalyptic number.

It is an amenable number.

391252 is a deficient number, since it is larger than the sum of its proper divisors (293446).

391252 is a wasteful number, since it uses less digits than its factorization.

391252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97817 (or 97815 counting only the distinct ones).

The product of its digits is 540, while the sum is 22.

The square root of 391252 is about 625.5013988793. The cubic root of 391252 is about 73.1395342089.

It can be divided in two parts, 39 and 1252, that multiplied together give a triangular number (48828 = T₃₁₂).

The spelling of 391252 in words is "three hundred ninety-one thousand, two hundred fifty-two".