3520557 has 16 divisors (see below), whose sum is σ = 5271360. Its totient is φ = 2322000.

The previous prime is 3520549. The next prime is 3520579. The reversal of 3520557 is 7550253.

It is not a de Polignac number, because 3520557 - 2³ = 3520549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 3520557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2082 + ... + 3372.

It is an arithmetic number, because the mean of its divisors is an integer number (329460).

Almost surely, 2^3520557 is an apocalyptic number.

It is an amenable number.

3520557 is a deficient number, since it is larger than the sum of its proper divisors (1750803).

3520557 is a wasteful number, since it uses less digits than its factorization.

3520557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1395 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 3520557 is about 1876.3147390563. The cubic root of 3520557 is about 152.1261216608.

The spelling of 3520557 in words is "three million, five hundred twenty thousand, five hundred fifty-seven".