55413312 has 56 divisors (see below), whose sum is σ = 147315936. Its totient is φ = 18382848.

The previous prime is 55413301. The next prime is 55413343. The reversal of 55413312 is 21331455.

55413312 = T₁₈₃ + T₁₈₄ + ... + T₆₉₆.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 48783 + ... + 49905.

Almost surely, 2^55413312 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 55413312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73657968).

55413312 is an abundant number, since it is smaller than the sum of its proper divisors (91902624).

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

55413312 is a wasteful number, since it uses less digits than its factorization.

55413312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1385 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 55413312 is about 7444.0118215919. The cubic root of 55413312 is about 381.2454794053.

Adding to 55413312 its reverse (21331455), we get a palindrome (76744767).

The spelling of 55413312 in words is "fifty-five million, four hundred thirteen thousand, three hundred twelve".