3857531 has 2 divisors, whose sum is σ = 3857532. Its totient is φ = 3857530.

The previous prime is 3857519. The next prime is 3857543. The reversal of 3857531 is 1357583.

It is a balanced prime because it is at equal distance from previous prime (3857519) and next prime (3857543).

It is a cyclic number.

It is not a de Polignac number, because 3857531 - 2⁶ = 3857467 is a prime.

It is a super-2 number, since 2×3857531² = 29761090831922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3857561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1928765 + 1928766.

It is an arithmetic number, because the mean of its divisors is an integer number (1928766).

Almost surely, 2^3857531 is an apocalyptic number.

3857531 is a deficient number, since it is larger than the sum of its proper divisors (1).

3857531 is an equidigital number, since it uses as much as digits as its factorization.

3857531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 3857531 is about 1964.0598259727. The cubic root of 3857531 is about 156.8326478899.

The spelling of 3857531 in words is "three million, eight hundred fifty-seven thousand, five hundred thirty-one".