3557091 has 4 divisors (see below), whose sum is σ = 4742792. Its totient is φ = 2371392.

The previous prime is 3557083. The next prime is 3557117. The reversal of 3557091 is 1907553.

It is a happy number.

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

It is not a de Polignac number, because 3557091 - 2³ = 3557083 is a prime.

It is a D-number.

It is a Duffinian number.

3557091 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3557041) 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, 592846 + ... + 592851.

It is an arithmetic number, because the mean of its divisors is an integer number (1185698).

Almost surely, 2^3557091 is an apocalyptic number.

3557091 is a deficient number, since it is larger than the sum of its proper divisors (1185701).

3557091 is a wasteful number, since it uses less digits than its factorization.

3557091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185700.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 3557091 is about 1886.0251854098. The cubic root of 3557091 is about 152.6505330760.

The spelling of 3557091 in words is "three million, five hundred fifty-seven thousand, ninety-one".