53446820 has 48 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 18263424.

The previous prime is 53446801. The next prime is 53446831. The reversal of 53446820 is 2864435.

It is a super-2 number, since 2×53446820² = 5713125136224800, which contains 22 as substring.

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, 66662 + ... + 67458.

It is an arithmetic number, because the mean of its divisors is an integer number (2681280).

Almost surely, 2^53446820 is an apocalyptic number.

It is an amenable number.

53446820 is an abundant number, since it is smaller than the sum of its proper divisors (75254620).

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

53446820 is a wasteful number, since it uses less digits than its factorization.

53446820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 53446820 is about 7310.7332053632. The cubic root of 53446820 is about 376.6812100092.

The spelling of 53446820 in words is "fifty-three million, four hundred forty-six thousand, eight hundred twenty".