55387283 has 8 divisors (see below), whose sum is σ = 63348480. Its totient is φ = 47438280.

The previous prime is 55387259. The next prime is 55387307. The reversal of 55387283 is 38278355.

It is an interprime number because it is at equal distance from previous prime (55387259) and next prime (55387307).

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 55387283 - 2⁶ = 55387219 is a prime.

It is a super-2 number, since 2×55387283² = 6135502236244178, which contains 22 as substring.

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 55387283.

It is not an unprimeable number, because it can be changed into a prime (55387183) 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, 11048 + ... + 15258.

It is an arithmetic number, because the mean of its divisors is an integer number (7918560).

Almost surely, 2^55387283 is an apocalyptic number.

55387283 is a deficient number, since it is larger than the sum of its proper divisors (7961197).

55387283 is a wasteful number, since it uses less digits than its factorization.

55387283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097.

The product of its digits is 201600, while the sum is 41.

The square root of 55387283 is about 7442.2632982178. The cubic root of 55387283 is about 381.1857765867.

It can be divided in two parts, 5538 and 7283, that added together give a palindrome (12821).

The spelling of 55387283 in words is "fifty-five million, three hundred eighty-seven thousand, two hundred eighty-three".