55200765 has 32 divisors (see below), whose sum is σ = 90118656. Its totient is φ = 28848960.

The previous prime is 55200763. The next prime is 55200787. The reversal of 55200765 is 56700255.

It is not a de Polignac number, because 55200765 - 2¹ = 55200763 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55200763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261510 + ... + 261720.

It is an arithmetic number, because the mean of its divisors is an integer number (2816208).

Almost surely, 2^55200765 is an apocalyptic number.

It is an amenable number.

55200765 is a deficient number, since it is larger than the sum of its proper divisors (34917891).

55200765 is a wasteful number, since it uses less digits than its factorization.

55200765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55200765 is about 7429.7217309937. The cubic root of 55200765 is about 380.7574113101.

The spelling of 55200765 in words is "fifty-five million, two hundred thousand, seven hundred sixty-five".