55771132 has 6 divisors (see below), whose sum is σ = 97599488. Its totient is φ = 27885564.

The previous prime is 55771091. The next prime is 55771171. The reversal of 55771132 is 23117755.

It is a super-2 number, since 2×55771132² = 6220838329122848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55771094 and 55771103.

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, 6971388 + ... + 6971395.

Almost surely, 2^55771132 is an apocalyptic number.

It is an amenable number.

55771132 is a deficient number, since it is larger than the sum of its proper divisors (41828356).

55771132 is a wasteful number, since it uses less digits than its factorization.

55771132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13942787 (or 13942785 counting only the distinct ones).

The product of its digits is 7350, while the sum is 31.

The square root of 55771132 is about 7468.0072308481. The cubic root of 55771132 is about 382.0643240273.

Adding to 55771132 its reverse (23117755), we get a palindrome (78888887).

The spelling of 55771132 in words is "fifty-five million, seven hundred seventy-one thousand, one hundred thirty-two".