3506531 has 4 divisors (see below), whose sum is σ = 4007472. Its totient is φ = 3005592.

The previous prime is 3506519. The next prime is 3506549. The reversal of 3506531 is 1356053.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3506531 is a prime.

It is a super-2 number, since 2×3506531² = 24591519307922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3506497 and 3506506.

It is not an unprimeable number, because it can be changed into a prime (3503531) 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, 250460 + ... + 250473.

It is an arithmetic number, because the mean of its divisors is an integer number (1001868).

Almost surely, 2^3506531 is an apocalyptic number.

3506531 is a deficient number, since it is larger than the sum of its proper divisors (500941).

3506531 is an equidigital number, since it uses as much as digits as its factorization.

3506531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500940.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 3506531 is about 1872.5733630488. The cubic root of 3506531 is about 151.9238278312.

The spelling of 3506531 in words is "three million, five hundred six thousand, five hundred thirty-one".