55526240 has 96 divisors (see below), whose sum is σ = 163586304. Its totient is φ = 17303040.

The previous prime is 55526231. The next prime is 55526281. The reversal of 55526240 is 4262555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10067 + ... + 14573.

It is an arithmetic number, because the mean of its divisors is an integer number (1704024).

Almost surely, 2^55526240 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 55526240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81793152).

55526240 is an abundant number, since it is smaller than the sum of its proper divisors (108060064).

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

55526240 is a wasteful number, since it uses less digits than its factorization.

55526240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4540 (or 4532 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 55526240 is about 7451.5931182533. The cubic root of 55526240 is about 381.5042865078.

Adding to 55526240 its reverse (4262555), we get a palindrome (59788795).

The spelling of 55526240 in words is "fifty-five million, five hundred twenty-six thousand, two hundred forty".