55031768 has 48 divisors (see below), whose sum is σ = 114513000. Its totient is φ = 24773760.

The previous prime is 55031759. The next prime is 55031777. The reversal of 55031768 is 86713055.

It is an interprime number because it is at equal distance from previous prime (55031759) and next prime (55031777).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134348 + ... + 134756.

Almost surely, 2^55031768 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55031768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57256500).

55031768 is an abundant number, since it is smaller than the sum of its proper divisors (59481232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55031768 is a wasteful number, since it uses less digits than its factorization.

55031768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 55031768 is about 7418.3399760324. The cubic root of 55031768 is about 380.3684514948.

It can be divided in two parts, 550 and 31768, that multiplied together give a square (17472400 = 4180²).

The spelling of 55031768 in words is "fifty-five million, thirty-one thousand, seven hundred sixty-eight".