55651250 has 30 divisors (see below), whose sum is σ = 104809419. Its totient is φ = 22155000.

The previous prime is 55651249. The next prime is 55651259. The reversal of 55651250 is 5215655.

55651250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 12866569 + 42784681 = 3587^2 + 6541^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5275.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55651259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 263645 + ... + 263855.

Almost surely, 2^55651250 is an apocalyptic number.

55651250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55651250 is a deficient number, since it is larger than the sum of its proper divisors (49158169).

55651250 is an frugal number, since it uses more digits than its factorization.

55651250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 55651250 is about 7459.9765415181. The cubic root of 55651250 is about 381.7903741000.

The spelling of 55651250 in words is "fifty-five million, six hundred fifty-one thousand, two hundred fifty".