53402216 has 64 divisors (see below), whose sum is σ = 119201280. Its totient is φ = 21954240.

The previous prime is 53402203. The next prime is 53402221. The reversal of 53402216 is 61220435.

It is a junction number, because it is equal to n+sod(n) for n = 53402191 and 53402200.

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, 161171 + ... + 161501.

It is an arithmetic number, because the mean of its divisors is an integer number (1862520).

Almost surely, 2^53402216 is an apocalyptic number.

53402216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53402216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59600640).

53402216 is an abundant number, since it is smaller than the sum of its proper divisors (65799064).

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

53402216 is a wasteful number, since it uses less digits than its factorization.

53402216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53402216 is about 7307.6819854178. The cubic root of 53402216 is about 376.5763945138.

The spelling of 53402216 in words is "fifty-three million, four hundred two thousand, two hundred sixteen".