55911960 has 144 divisors (see below), whose sum is σ = 196981200. Its totient is φ = 13747968.

The previous prime is 55911943. The next prime is 55911967. The reversal of 55911960 is 6911955.

55911960 is a `hidden beast` number, since 5 + 591 + 1 + 9 + 60 = 666.

It is a super-2 number, since 2×55911960² = 6252294542083200, which contains 22 as substring.

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 (55911967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60381 + ... + 61299.

It is an arithmetic number, because the mean of its divisors is an integer number (1367925).

Almost surely, 2^55911960 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 55911960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98490600).

55911960 is an abundant number, since it is smaller than the sum of its proper divisors (141069240).

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

55911960 is a wasteful number, since it uses less digits than its factorization.

55911960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 55911960 is about 7477.4300397931. The cubic root of 55911960 is about 382.3856379882.

The spelling of 55911960 in words is "fifty-five million, nine hundred eleven thousand, nine hundred sixty".