53203770 has 64 divisors (see below), whose sum is σ = 143354880. Its totient is φ = 14040000.

The previous prime is 53203769. The next prime is 53203783. The reversal of 53203770 is 7730235.

It is a super-2 number, since 2×53203770² = 5661282284425800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26295 + ... + 28245.

It is an arithmetic number, because the mean of its divisors is an integer number (2239920).

Almost surely, 2^53203770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53203770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71677440).

53203770 is an abundant number, since it is smaller than the sum of its proper divisors (90151110).

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

53203770 is a wasteful number, since it uses less digits than its factorization.

53203770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 27.

The square root of 53203770 is about 7294.0914444501. The cubic root of 53203770 is about 376.1093549813.

The spelling of 53203770 in words is "fifty-three million, two hundred three thousand, seven hundred seventy".