55172750 has 32 divisors (see below), whose sum is σ = 103896000. Its totient is φ = 21938400.

The previous prime is 55172749. The next prime is 55172759. The reversal of 55172750 is 5727155.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55172759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49196 + ... + 50304.

It is an arithmetic number, because the mean of its divisors is an integer number (3246750).

Almost surely, 2^55172750 is an apocalyptic number.

55172750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55172750 is a deficient number, since it is larger than the sum of its proper divisors (48723250).

55172750 is a wasteful number, since it uses less digits than its factorization.

55172750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1315 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 55172750 is about 7427.8361586669. The cubic root of 55172750 is about 380.6929875416.

The spelling of 55172750 in words is "fifty-five million, one hundred seventy-two thousand, seven hundred fifty".