55209835 has 16 divisors (see below), whose sum is σ = 67982976. Its totient is φ = 43026048.

The previous prime is 55209811. The next prime is 55209851. The reversal of 55209835 is 53890255.

It is a cyclic number.

It is not a de Polignac number, because 55209835 - 2¹⁷ = 55078763 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55209794 and 55209803.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40942 + ... + 42268.

It is an arithmetic number, because the mean of its divisors is an integer number (4248936).

Almost surely, 2^55209835 is an apocalyptic number.

55209835 is a deficient number, since it is larger than the sum of its proper divisors (12773141).

55209835 is a wasteful number, since it uses less digits than its factorization.

55209835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1542.

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 55209835 is about 7430.3320921746. The cubic root of 55209835 is about 380.7782641648.

The spelling of 55209835 in words is "fifty-five million, two hundred nine thousand, eight hundred thirty-five".