55301616 has 100 divisors (see below), whose sum is σ = 162583344. Its totient is φ = 18144000.

The previous prime is 55301611. The next prime is 55301621. The reversal of 55301616 is 61610355.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55301611) and next prime (55301621).

It is a super-2 number, since 2×55301616² = 6116537464422912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 55301616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55301611) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 91716 + ... + 92316.

Almost surely, 2^55301616 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 55301616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81291672).

55301616 is an abundant number, since it is smaller than the sum of its proper divisors (107281728).

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

55301616 is a wasteful number, since it uses less digits than its factorization.

55301616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 677 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 55301616 is about 7436.5056310071. The cubic root of 55301616 is about 380.9891496693.

The spelling of 55301616 in words is "fifty-five million, three hundred one thousand, six hundred sixteen".