53021571 has 16 divisors (see below), whose sum is σ = 75824640. Its totient is φ = 32853600.

The previous prime is 53021543. The next prime is 53021587. The reversal of 53021571 is 17512035.

It is not a de Polignac number, because 53021571 - 2²⁵ = 19467139 is a prime.

It is a super-2 number, since 2×53021571² = 5622573982616082, which contains 22 as substring.

53021571 is a modest number, since divided by 21571 gives 53 as remainder.

It is not an unprimeable number, because it can be changed into a prime (53021671) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5755 + ... + 11796.

It is an arithmetic number, because the mean of its divisors is an integer number (4739040).

Almost surely, 2^53021571 is an apocalyptic number.

53021571 is a deficient number, since it is larger than the sum of its proper divisors (22803069).

53021571 is a wasteful number, since it uses less digits than its factorization.

53021571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17626.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 53021571 is about 7281.5912409308. The cubic root of 53021571 is about 375.6795287868.

The spelling of 53021571 in words is "fifty-three million, twenty-one thousand, five hundred seventy-one".