3557845 has 16 divisors (see below), whose sum is σ = 4760640. Its totient is φ = 2536704.

The previous prime is 3557843. The next prime is 3557867. The reversal of 3557845 is 5487553.

It is a cyclic number.

It is not a de Polignac number, because 3557845 - 2¹ = 3557843 is a prime.

It is a super-2 number, since 2×3557845² = 25316522088050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3557843) 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, 514 + ... + 2716.

It is an arithmetic number, because the mean of its divisors is an integer number (297540).

Almost surely, 2^3557845 is an apocalyptic number.

It is an amenable number.

3557845 is a deficient number, since it is larger than the sum of its proper divisors (1202795).

3557845 is a wasteful number, since it uses less digits than its factorization.

3557845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244.

The product of its digits is 84000, while the sum is 37.

The square root of 3557845 is about 1886.2250661043. The cubic root of 3557845 is about 152.6613181407.

It can be divided in two parts, 3 and 557845, that multiplied together give a triangular number (1673535 = T₁₈₂₉).

The spelling of 3557845 in words is "three million, five hundred fifty-seven thousand, eight hundred forty-five".