53165970 has 256 divisors, whose sum is σ = 178536960. Its totient is φ = 11197440.

The previous prime is 53165951. The next prime is 53165993. The reversal of 53165970 is 7956135.

It is a happy number.

53165970 is a `hidden beast` number, since 53 + 16 + 597 + 0 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3127402 + ... + 3127418.

It is an arithmetic number, because the mean of its divisors is an integer number (697410).

Almost surely, 2^53165970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53165970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89268480).

53165970 is an abundant number, since it is smaller than the sum of its proper divisors (125370990).

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

53165970 is a wasteful number, since it uses less digits than its factorization.

53165970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 53165970 is about 7291.4998457108. The cubic root of 53165970 is about 376.0202616590.

The spelling of 53165970 in words is "fifty-three million, one hundred sixty-five thousand, nine hundred seventy".