55511456 has 96 divisors (see below), whose sum is σ = 146821248. Its totient is φ = 19952640.

The previous prime is 55511437. The next prime is 55511459. The reversal of 55511456 is 65411555.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (55511459) 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 15 ways as a sum of consecutive naturals, for example, 31166 + ... + 32898.

It is an arithmetic number, because the mean of its divisors is an integer number (1529388).

Almost surely, 2^55511456 is an apocalyptic number.

55511456 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55511456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73410624).

55511456 is an abundant number, since it is smaller than the sum of its proper divisors (91309792).

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

55511456 is a wasteful number, since it uses less digits than its factorization.

55511456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774 (or 1766 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 55511456 is about 7450.6010495798. The cubic root of 55511456 is about 381.4704246795.

Subtracting 55511456 from its reverse (65411555), we obtain a palindrome (9900099).

It can be divided in two parts, 5551 and 1456, that added together give a palindrome (7007).

The spelling of 55511456 in words is "fifty-five million, five hundred eleven thousand, four hundred fifty-six".