55772982 has 16 divisors (see below), whose sum is σ = 123940080. Its totient is φ = 18590976.

The previous prime is 55772933. The next prime is 55772989. The reversal of 55772982 is 28927755.

It is a happy number.

55772982 is a `hidden beast` number, since 557 + 7 + 2 + 98 + 2 = 666.

55772982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55772982² = 6221251042344648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55772989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516363 + ... + 516470.

It is an arithmetic number, because the mean of its divisors is an integer number (7746255).

Almost surely, 2^55772982 is an apocalyptic number.

55772982 is an abundant number, since it is smaller than the sum of its proper divisors (68167098).

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

55772982 is a wasteful number, since it uses less digits than its factorization.

55772982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032844 (or 1032838 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 55772982 is about 7468.1310915114. The cubic root of 55772982 is about 382.0685485018.

The spelling of 55772982 in words is "fifty-five million, seven hundred seventy-two thousand, nine hundred eighty-two".