55147472 has 10 divisors (see below), whose sum is σ = 106848258. Its totient is φ = 27573728.

The previous prime is 55147471. The next prime is 55147483. The reversal of 55147472 is 27474155.

It can be written as a sum of positive squares in only one way, i.e., 28686736 + 26460736 = 5356^2 + 5144^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55147471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1723343 + ... + 1723374.

Almost surely, 2^55147472 is an apocalyptic number.

It is an amenable number.

55147472 is a deficient number, since it is larger than the sum of its proper divisors (51700786).

55147472 is a wasteful number, since it uses less digits than its factorization.

55147472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446725 (or 3446719 counting only the distinct ones).

The product of its digits is 39200, while the sum is 35.

The square root of 55147472 is about 7426.1343914583. The cubic root of 55147472 is about 380.6348391056.

The spelling of 55147472 in words is "fifty-five million, one hundred forty-seven thousand, four hundred seventy-two".