53021783 has 8 divisors (see below), whose sum is σ = 54237600. Its totient is φ = 51814048.

The previous prime is 53021767. The next prime is 53021789. The reversal of 53021783 is 38712035.

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

It is a cyclic number.

It is not a de Polignac number, because 53021783 - 2⁴ = 53021767 is a prime.

It is a super-2 number, since 2×53021783² = 5622618944998178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021789) 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, 12398 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (6779700).

Almost surely, 2^53021783 is an apocalyptic number.

53021783 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

53021783 is a deficient number, since it is larger than the sum of its proper divisors (1215817).

53021783 is a wasteful number, since it uses less digits than its factorization.

53021783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 53021783 is about 7281.6057981739. The cubic root of 53021783 is about 375.6800294884.

The spelling of 53021783 in words is "fifty-three million, twenty-one thousand, seven hundred eighty-three".