55557982 has 4 divisors (see below), whose sum is σ = 83336976. Its totient is φ = 27778990.

The previous prime is 55557967. The next prime is 55558001. The reversal of 55557982 is 28975555.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13889494 + ... + 13889497.

It is an arithmetic number, because the mean of its divisors is an integer number (20834244).

Almost surely, 2^55557982 is an apocalyptic number.

55557982 is a deficient number, since it is larger than the sum of its proper divisors (27778994).

55557982 is a wasteful number, since it uses less digits than its factorization.

55557982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778993.

The product of its digits is 630000, while the sum is 46.

The square root of 55557982 is about 7453.7226940637. The cubic root of 55557982 is about 381.5769692746.

The spelling of 55557982 in words is "fifty-five million, five hundred fifty-seven thousand, nine hundred eighty-two".