55357385 has 8 divisors (see below), whose sum is σ = 66485256. Its totient is φ = 44248320.

The previous prime is 55357381. The next prime is 55357397. The reversal of 55357385 is 58375355.

It can be written as a sum of positive squares in 4 ways, for example, as 6091024 + 49266361 = 2468^2 + 7019^2 .

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

It is not a de Polignac number, because 55357385 - 2² = 55357381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55357381) 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, 2897 + ... + 10913.

It is an arithmetic number, because the mean of its divisors is an integer number (8310657).

Almost surely, 2^55357385 is an apocalyptic number.

It is an amenable number.

55357385 is a deficient number, since it is larger than the sum of its proper divisors (11127871).

55357385 is a wasteful number, since it uses less digits than its factorization.

55357385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9403.

The product of its digits is 315000, while the sum is 41.

The square root of 55357385 is about 7440.2543639314. The cubic root of 55357385 is about 381.1171763414.

The spelling of 55357385 in words is "fifty-five million, three hundred fifty-seven thousand, three hundred eighty-five".