55508916 has 48 divisors (see below), whose sum is σ = 133499520. Its totient is φ = 17940480.

The previous prime is 55508909. The next prime is 55508983. The reversal of 55508916 is 61980555.

55508916 is a nontrivial binomial coefficient, being equal to C(10537, 2).

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, 126225 + ... + 126663.

It is an arithmetic number, because the mean of its divisors is an integer number (2781240).

Almost surely, 2^55508916 is an apocalyptic number.

55508916 is the 10536-th triangular number.

It is an amenable number.

55508916 is an abundant number, since it is smaller than the sum of its proper divisors (77990604).

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

55508916 is a wasteful number, since it uses less digits than its factorization.

55508916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 39.

The square root of 55508916 is about 7450.4305915833. The cubic root of 55508916 is about 381.4646063630.

The spelling of 55508916 in words is "fifty-five million, five hundred eight thousand, nine hundred sixteen".