55415648 has 96 divisors (see below), whose sum is σ = 124540416. Its totient is φ = 24127488.

The previous prime is 55415639. The next prime is 55415707. The reversal of 55415648 is 84651455.

It is a happy number.

It is a super-3 number, since 3×55415648³ (a number of 24 digits) contains 333 as substring.

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, 537965 + ... + 538067.

It is an arithmetic number, because the mean of its divisors is an integer number (1297296).

Almost surely, 2^55415648 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 55415648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62270208).

55415648 is an abundant number, since it is smaller than the sum of its proper divisors (69124768).

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

55415648 is a wasteful number, since it uses less digits than its factorization.

55415648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 188 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The square root of 55415648 is about 7444.1687245790. The cubic root of 55415648 is about 381.2508365833.

The spelling of 55415648 in words is "fifty-five million, four hundred fifteen thousand, six hundred forty-eight".