55017472 has 64 divisors (see below), whose sum is σ = 116390160. Its totient is φ = 25952256.

The previous prime is 55017439. The next prime is 55017481. The reversal of 55017472 is 27471055.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753628 + ... + 753700.

Almost surely, 2^55017472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55017472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58195080).

55017472 is an abundant number, since it is smaller than the sum of its proper divisors (61372688).

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

55017472 is an frugal number, since it uses more digits than its factorization.

55017472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 55017472 is about 7417.3763555586. The cubic root of 55017472 is about 380.3355116220.

The spelling of 55017472 in words is "fifty-five million, seventeen thousand, four hundred seventy-two".