55468644 has 96 divisors (see below), whose sum is σ = 162763776. Its totient is φ = 14282880.

The previous prime is 55468639. The next prime is 55468669. The reversal of 55468644 is 44686455.

55468644 = T₁ + T₂ + ... + T₆₉₂.

55468644 is a nontrivial binomial coefficient, being equal to C(694, 3).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 55468596 and 55468605.

It is an unprimeable number.

It is the 692-nd tetrahedral number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159679 + ... + 160025.

It is an arithmetic number, because the mean of its divisors is an integer number (1695456).

Almost surely, 2^55468644 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 55468644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81381888).

55468644 is an abundant number, since it is smaller than the sum of its proper divisors (107295132).

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

55468644 is a wasteful number, since it uses less digits than its factorization.

55468644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 543 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 55468644 is about 7447.7274386218. The cubic root of 55468644 is about 381.3723325424.

The spelling of 55468644 in words is "fifty-five million, four hundred sixty-eight thousand, six hundred forty-four".