55517982 has 32 divisors (see below), whose sum is σ = 122815392. Its totient is φ = 16619904.

The previous prime is 55517941. The next prime is 55517989. The reversal of 55517982 is 28971555.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55517989) 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, 6733 + ... + 12504.

It is an arithmetic number, because the mean of its divisors is an integer number (3837981).

Almost surely, 2^55517982 is an apocalyptic number.

55517982 is an abundant number, since it is smaller than the sum of its proper divisors (67297410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55517982 is a wasteful number, since it uses less digits than its factorization.

55517982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19292.

The product of its digits is 126000, while the sum is 42.

The square root of 55517982 is about 7451.0389879533. The cubic root of 55517982 is about 381.4853728159.

The spelling of 55517982 in words is "fifty-five million, five hundred seventeen thousand, nine hundred eighty-two".