55811052 has 96 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 16718400.

The previous prime is 55811047. The next prime is 55811053. The reversal of 55811052 is 25011855.

55811052 is a `hidden beast` number, since 558 + 1 + 105 + 2 = 666.

It is a super-2 number, since 2×55811052² = 6229747050693408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55811053) 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, 129277 + ... + 129707.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^55811052 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 55811052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

55811052 is an abundant number, since it is smaller than the sum of its proper divisors (103856148).

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

55811052 is a wasteful number, since it uses less digits than its factorization.

55811052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 55811052 is about 7470.6794871685. The cubic root of 55811052 is about 382.1554606044.

The spelling of 55811052 in words is "fifty-five million, eight hundred eleven thousand, fifty-two".