55468140 has 96 divisors (see below), whose sum is σ = 191170560. Its totient is φ = 11702016.

The previous prime is 55468129. The next prime is 55468169. The reversal of 55468140 is 4186455.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381 + ... + 10539.

It is an arithmetic number, because the mean of its divisors is an integer number (1991360).

Almost surely, 2^55468140 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 55468140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95585280).

55468140 is an abundant number, since it is smaller than the sum of its proper divisors (135702420).

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

55468140 is a wasteful number, since it uses less digits than its factorization.

55468140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10191 (or 10189 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 55468140 is about 7447.6936027202. The cubic root of 55468140 is about 381.3711774619.

The spelling of 55468140 in words is "fifty-five million, four hundred sixty-eight thousand, one hundred forty".