53166420 has 72 divisors (see below), whose sum is σ = 164343816. Its totient is φ = 13907712.

The previous prime is 53166413. The next prime is 53166439. The reversal of 53166420 is 2466135.

53166420 is a `hidden beast` number, since 5 + 3 + 16 + 642 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1153476 + 52012944 = 1074^2 + 7212^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6754 + ... + 12326.

It is an arithmetic number, because the mean of its divisors is an integer number (2282553).

Almost surely, 2^53166420 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 53166420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82171908).

53166420 is an abundant number, since it is smaller than the sum of its proper divisors (111177396).

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

53166420 is a wasteful number, since it uses less digits than its factorization.

53166420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641 (or 5636 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 53166420 is about 7291.5307034943. The cubic root of 53166420 is about 376.0213225421.

The spelling of 53166420 in words is "fifty-three million, one hundred sixty-six thousand, four hundred twenty".