55015732 has 12 divisors (see below), whose sum is σ = 96410020. Its totient is φ = 27470016.

The previous prime is 55015729. The next prime is 55015759. The reversal of 55015732 is 23751055.

It can be written as a sum of positive squares in 2 ways, for example, as 20016676 + 34999056 = 4474^2 + 5916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55015732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6057 + ... + 12112.

Almost surely, 2^55015732 is an apocalyptic number.

It is an amenable number.

55015732 is a deficient number, since it is larger than the sum of its proper divisors (41394288).

55015732 is a wasteful number, since it uses less digits than its factorization.

55015732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18930 (or 18928 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 55015732 is about 7417.2590624839. The cubic root of 55015732 is about 380.3315020426.

Adding to 55015732 its reverse (23751055), we get a palindrome (78766787).

The spelling of 55015732 in words is "fifty-five million, fifteen thousand, seven hundred thirty-two".