55409210 has 8 divisors (see below), whose sum is σ = 99736596. Its totient is φ = 22163680.

The previous prime is 55409197. The next prime is 55409251. The reversal of 55409210 is 1290455.

It can be written as a sum of positive squares in 2 ways, for example, as 53567761 + 1841449 = 7319^2 + 1357^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 55409210.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2770451 + ... + 2770470.

Almost surely, 2^55409210 is an apocalyptic number.

55409210 is a deficient number, since it is larger than the sum of its proper divisors (44327386).

55409210 is a wasteful number, since it uses less digits than its factorization.

55409210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540928.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 55409210 is about 7443.7362930184. The cubic root of 55409210 is about 381.2360718731.

Adding to 55409210 its reverse (1290455), we get a palindrome (56699665).

The spelling of 55409210 in words is "fifty-five million, four hundred nine thousand, two hundred ten".