5581958 has 4 divisors (see below), whose sum is σ = 8372940. Its totient is φ = 2790978.

The previous prime is 5581937. The next prime is 5581963. The reversal of 5581958 is 8591855.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8591855 = 5 ⋅1718371.

It is a super-2 number, since 2×5581958² = 62316510227528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395488 + ... + 1395491.

It is an arithmetic number, because the mean of its divisors is an integer number (2093235).

Almost surely, 2^5581958 is an apocalyptic number.

5581958 is a deficient number, since it is larger than the sum of its proper divisors (2790982).

5581958 is a wasteful number, since it uses less digits than its factorization.

5581958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2790981.

The product of its digits is 72000, while the sum is 41.

The square root of 5581958 is about 2362.6167696010. The cubic root of 5581958 is about 177.3898860780.

The spelling of 5581958 in words is "five million, five hundred eighty-one thousand, nine hundred fifty-eight".