3531247 has 2 divisors, whose sum is σ = 3531248. Its totient is φ = 3531246.

The previous prime is 3531233. The next prime is 3531271. The reversal of 3531247 is 7421353.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3531247 - 2⁷ = 3531119 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 5⁷ + 3¹² + 1 + 2²¹ + 4⁴ + 7⁷ .

3531247 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3531277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765623 + 1765624.

It is an arithmetic number, because the mean of its divisors is an integer number (1765624).

Almost surely, 2^3531247 is an apocalyptic number.

3531247 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531247 is an equidigital number, since it uses as much as digits as its factorization.

3531247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 3531247 is about 1879.1612490683. The cubic root of 3531247 is about 152.2799405994.

It can be divided in two parts, 353 and 1247, that added together give a square (1600 = 40²).

The spelling of 3531247 in words is "three million, five hundred thirty-one thousand, two hundred forty-seven".