55561210 has 8 divisors (see below), whose sum is σ = 100010196. Its totient is φ = 22224480.

The previous prime is 55561193. The next prime is 55561213. The reversal of 55561210 is 1216555.

It can be written as a sum of positive squares in 2 ways, for example, as 53626329 + 1934881 = 7323^2 + 1391^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55561213) 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, 2778051 + ... + 2778070.

Almost surely, 2^55561210 is an apocalyptic number.

55561210 is a deficient number, since it is larger than the sum of its proper divisors (44448986).

55561210 is a wasteful number, since it uses less digits than its factorization.

55561210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556128.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 55561210 is about 7453.9392270128. The cubic root of 55561210 is about 381.5843591915.

Adding to 55561210 its reverse (1216555), we get a palindrome (56777765).

The spelling of 55561210 in words is "fifty-five million, five hundred sixty-one thousand, two hundred ten".