53321016 has 48 divisors (see below), whose sum is σ = 155069640. Its totient is φ = 15234240.

The previous prime is 53320999. The next prime is 53321017. The reversal of 53321016 is 61012335.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 53320983 and 53321001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53321017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21495 + ... + 23846.

Almost surely, 2^53321016 is an apocalyptic number.

53321016 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53321016 is an abundant number, since it is smaller than the sum of its proper divisors (101748624).

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

53321016 is a wasteful number, since it uses less digits than its factorization.

53321016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45364 (or 45353 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 53321016 is about 7302.1240745416. The cubic root of 53321016 is about 376.3854316852.

The spelling of 53321016 in words is "fifty-three million, three hundred twenty-one thousand, sixteen".