55517357 has 8 divisors (see below), whose sum is σ = 63493632. Its totient is φ = 47552400.

The previous prime is 55517351. The next prime is 55517383. The reversal of 55517357 is 75371555.

It is a happy number.

55517357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 55517357 - 2²⁰ = 54468781 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55517357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55517351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16607 + ... + 19667.

It is an arithmetic number, because the mean of its divisors is an integer number (7936704).

Almost surely, 2^55517357 is an apocalyptic number.

It is an amenable number.

55517357 is a deficient number, since it is larger than the sum of its proper divisors (7976275).

55517357 is a wasteful number, since it uses less digits than its factorization.

55517357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659.

The product of its digits is 91875, while the sum is 38.

The square root of 55517357 is about 7450.9970473756. The cubic root of 55517357 is about 381.4839412722.

The spelling of 55517357 in words is "fifty-five million, five hundred seventeen thousand, three hundred fifty-seven".