55711764 has 36 divisors (see below), whose sum is σ = 141738324. Its totient is φ = 18450432.

The previous prime is 55711763. The next prime is 55711769. The reversal of 55711764 is 46711755.

It can be written as a sum of positive squares in 2 ways, for example, as 18404100 + 37307664 = 4290^2 + 6108^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55711763) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 724 + ... + 10580.

Almost surely, 2^55711764 is an apocalyptic number.

It is an amenable number.

55711764 is an abundant number, since it is smaller than the sum of its proper divisors (86026560).

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

55711764 is a wasteful number, since it uses less digits than its factorization.

55711764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10024 (or 10019 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 55711764 is about 7464.0313504165. The cubic root of 55711764 is about 381.9287075822.

Subtracting from 55711764 its reverse (46711755), we obtain a palindrome (9000009).

It can be divided in two parts, 557 and 11764, that added together give a palindrome (12321).

The spelling of 55711764 in words is "fifty-five million, seven hundred eleven thousand, seven hundred sixty-four".