55363520 has 56 divisors (see below), whose sum is σ = 136111488. Its totient is φ = 21427200.

The previous prime is 55363487. The next prime is 55363537. The reversal of 55363520 is 2536355.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7130 + ... + 12710.

Almost surely, 2^55363520 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 55363520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68055744).

55363520 is an abundant number, since it is smaller than the sum of its proper divisors (80747968).

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

55363520 is a wasteful number, since it uses less digits than its factorization.

55363520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5629 (or 5619 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 55363520 is about 7440.6666368008. Note that the first 4 decimals coincide. The cubic root of 55363520 is about 381.1312549658.

Adding to 55363520 its reverse (2536355), we get a palindrome (57899875).

The spelling of 55363520 in words is "fifty-five million, three hundred sixty-three thousand, five hundred twenty".