53021825 has 24 divisors (see below), whose sum is σ = 67704000. Its totient is φ = 41175360.

The previous prime is 53021821. The next prime is 53021833. The reversal of 53021825 is 52812035.

It is not a de Polignac number, because 53021825 - 2² = 53021821 is a prime.

It is a super-2 number, since 2×53021825² = 5622627852661250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53021794 and 53021803.

It is not an unprimeable number, because it can be changed into a prime (53021821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151751 + ... + 152099.

It is an arithmetic number, because the mean of its divisors is an integer number (2821000).

Almost surely, 2^53021825 is an apocalyptic number.

It is an amenable number.

53021825 is a deficient number, since it is larger than the sum of its proper divisors (14682175).

53021825 is a wasteful number, since it uses less digits than its factorization.

53021825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 53021825 is about 7281.6086821526. The cubic root of 53021825 is about 375.6801286838.

The spelling of 53021825 in words is "fifty-three million, twenty-one thousand, eight hundred twenty-five".