55193210 has 8 divisors (see below), whose sum is σ = 99347796. Its totient is φ = 22077280.

The previous prime is 55193197. The next prime is 55193213. The reversal of 55193210 is 1239155.

It can be written as a sum of positive squares in 2 ways, for example, as 52374169 + 2819041 = 7237^2 + 1679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55193210.

It is not an unprimeable number, because it can be changed into a prime (55193213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2759651 + ... + 2759670.

Almost surely, 2^55193210 is an apocalyptic number.

55193210 is a deficient number, since it is larger than the sum of its proper divisors (44154586).

55193210 is a wasteful number, since it uses less digits than its factorization.

55193210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5519328.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 55193210 is about 7429.2132827104. The cubic root of 55193210 is about 380.7400398510.

The spelling of 55193210 in words is "fifty-five million, one hundred ninety-three thousand, two hundred ten".