55614240 has 144 divisors (see below), whose sum is σ = 207095616. Its totient is φ = 13478400.

The previous prime is 55614239. The next prime is 55614263. The reversal of 55614240 is 4241655.

55614240 is a `hidden beast` number, since 5 + 5 + 614 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14085 + ... + 17595.

It is an arithmetic number, because the mean of its divisors is an integer number (1438164).

Almost surely, 2^55614240 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 55614240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103547808).

55614240 is an abundant number, since it is smaller than the sum of its proper divisors (151481376).

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

55614240 is a wasteful number, since it uses less digits than its factorization.

55614240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3532 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 55614240 is about 7457.4955581616. The cubic root of 55614240 is about 381.7057207440.

Adding to 55614240 its reverse (4241655), we get a palindrome (59855895).

It can be divided in two parts, 5561 and 4240, that added together give a square (9801 = 99²).

The spelling of 55614240 in words is "fifty-five million, six hundred fourteen thousand, two hundred forty".