53303861 has 8 divisors (see below), whose sum is σ = 57973944. Its totient is φ = 48715200.

The previous prime is 53303851. The next prime is 53303863. The reversal of 53303861 is 16830335.

It can be written as a sum of positive squares in 4 ways, for example, as 28153636 + 25150225 = 5306^2 + 5015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53303861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53303863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18986 + ... + 21611.

It is an arithmetic number, because the mean of its divisors is an integer number (7246743).

Almost surely, 2^53303861 is an apocalyptic number.

It is an amenable number.

53303861 is a deficient number, since it is larger than the sum of its proper divisors (4670083).

53303861 is a wasteful number, since it uses less digits than its factorization.

53303861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40711.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 53303861 is about 7300.9493218348. The cubic root of 53303861 is about 376.3450624578.

The spelling of 53303861 in words is "fifty-three million, three hundred three thousand, eight hundred sixty-one".