55477213 has 8 divisors (see below), whose sum is σ = 60893856. Its totient is φ = 50122800.

The previous prime is 55477193. The next prime is 55477217. The reversal of 55477213 is 31277455.

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 55477213 - 2¹³ = 55469021 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 (55477217) 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, 13678 + ... + 17263.

It is an arithmetic number, because the mean of its divisors is an integer number (7611732).

Almost surely, 2^55477213 is an apocalyptic number.

It is an amenable number.

55477213 is a deficient number, since it is larger than the sum of its proper divisors (5416643).

55477213 is a wasteful number, since it uses less digits than its factorization.

55477213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31115.

The product of its digits is 29400, while the sum is 34.

The square root of 55477213 is about 7448.3026925602. The cubic root of 55477213 is about 381.3919701311.

The spelling of 55477213 in words is "fifty-five million, four hundred seventy-seven thousand, two hundred thirteen".