3555641 has 4 divisors (see below), whose sum is σ = 3742800. Its totient is φ = 3368484.

The previous prime is 3555613. The next prime is 3555647. The reversal of 3555641 is 1465553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1465553 = 17 ⋅86209.

It is a cyclic number.

It is not a de Polignac number, because 3555641 - 2¹⁴ = 3539257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3555647) 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, 93551 + ... + 93588.

It is an arithmetic number, because the mean of its divisors is an integer number (935700).

Almost surely, 2^3555641 is an apocalyptic number.

It is an amenable number.

3555641 is a deficient number, since it is larger than the sum of its proper divisors (187159).

3555641 is a wasteful number, since it uses less digits than its factorization.

3555641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187158.

The product of its digits is 9000, while the sum is 29.

The square root of 3555641 is about 1885.6407399078. The cubic root of 3555641 is about 152.6297882824.

The spelling of 3555641 in words is "three million, five hundred fifty-five thousand, six hundred forty-one".