55071632 has 40 divisors (see below), whose sum is σ = 133033152. Its totient is φ = 21456000.

The previous prime is 55071631. The next prime is 55071641. The reversal of 55071632 is 23617055.

It is a super-2 number, since 2×55071632² = 6065769302286848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55071595 and 55071604.

It is not an unprimeable number, because it can be changed into a prime (55071631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21119 + ... + 23582.

Almost surely, 2^55071632 is an apocalyptic number.

It is an amenable number.

55071632 is an abundant number, since it is smaller than the sum of its proper divisors (77961520).

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

55071632 is a wasteful number, since it uses less digits than its factorization.

55071632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44727 (or 44721 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 55071632 is about 7421.0263441117. The cubic root of 55071632 is about 380.4602732959.

Adding to 55071632 its reverse (23617055), we get a palindrome (78688687).

The spelling of 55071632 in words is "fifty-five million, seventy-one thousand, six hundred thirty-two".