53021572 has 24 divisors (see below), whose sum is σ = 99361080. Its totient is φ = 24668160.

The previous prime is 53021543. The next prime is 53021587. The reversal of 53021572 is 27512035.

It can be written as a sum of positive squares in 4 ways, for example, as 835396 + 52186176 = 914^2 + 7224^2 .

It is a super-2 number, since 2×53021572² = 5622574194702368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672 + ... + 10432.

It is an arithmetic number, because the mean of its divisors is an integer number (4140045).

Almost surely, 2^53021572 is an apocalyptic number.

It is an amenable number.

53021572 is a deficient number, since it is larger than the sum of its proper divisors (46339508).

53021572 is a wasteful number, since it uses less digits than its factorization.

53021572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8871 (or 8869 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 53021572 is about 7281.5913095971. The cubic root of 53021572 is about 375.6795311486.

The spelling of 53021572 in words is "fifty-three million, twenty-one thousand, five hundred seventy-two".