3521437 has 2 divisors, whose sum is σ = 3521438. Its totient is φ = 3521436.

The previous prime is 3521417. The next prime is 3521473. The reversal of 3521437 is 7341253.

Together with next prime (3521473) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2493241 + 1028196 = 1579^2 + 1014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3521437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3521417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760718 + 1760719.

It is an arithmetic number, because the mean of its divisors is an integer number (1760719).

Almost surely, 2^3521437 is an apocalyptic number.

It is an amenable number.

3521437 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521437 is an equidigital number, since it uses as much as digits as its factorization.

3521437 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 3521437 is about 1876.5492266392. The cubic root of 3521437 is about 152.1387957759.

The spelling of 3521437 in words is "three million, five hundred twenty-one thousand, four hundred thirty-seven".