55032147 has 12 divisors (see below), whose sum is σ = 79896960. Its totient is φ = 36500688.

The previous prime is 55032137. The next prime is 55032199. The reversal of 55032147 is 74123055.

It is a happy number.

It is not a de Polignac number, because 55032147 - 2⁶ = 55032083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55032147.

It is not an unprimeable number, because it can be changed into a prime (55032137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13747 + ... + 17292.

It is an arithmetic number, because the mean of its divisors is an integer number (6658080).

Almost surely, 2^55032147 is an apocalyptic number.

55032147 is a deficient number, since it is larger than the sum of its proper divisors (24864813).

55032147 is a wasteful number, since it uses less digits than its factorization.

55032147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31242 (or 31239 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55032147 is about 7418.3655207869. The cubic root of 55032147 is about 380.3693246833.

The spelling of 55032147 in words is "fifty-five million, thirty-two thousand, one hundred forty-seven".