55495861 has 8 divisors (see below), whose sum is σ = 57317760. Its totient is φ = 53700768.

The previous prime is 55495831. The next prime is 55495873. The reversal of 55495861 is 16859455.

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

It is a cyclic number.

It is not a de Polignac number, because 55495861 - 2⁵ = 55495829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55495831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2451 + ... + 10816.

It is an arithmetic number, because the mean of its divisors is an integer number (7164720).

Almost surely, 2^55495861 is an apocalyptic number.

It is an amenable number.

55495861 is a deficient number, since it is larger than the sum of its proper divisors (1821899).

55495861 is a wasteful number, since it uses less digits than its factorization.

55495861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13403.

The product of its digits is 216000, while the sum is 43.

The square root of 55495861 is about 7449.5544162050. The cubic root of 55495861 is about 381.4346987899.

The spelling of 55495861 in words is "fifty-five million, four hundred ninety-five thousand, eight hundred sixty-one".