53021225 has 6 divisors (see below), whose sum is σ = 65746350. Its totient is φ = 42416960.

The previous prime is 53021219. The next prime is 53021231. The reversal of 53021225 is 52212035.

It is an interprime number because it is at equal distance from previous prime (53021219) and next prime (53021231).

It can be written as a sum of positive squares in 3 ways, for example, as 10471696 + 42549529 = 3236^2 + 6523^2 .

It is not a de Polignac number, because 53021225 - 2⁸ = 53020969 is a prime.

It is a super-2 number, since 2×53021225² = 5622500601001250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53021197 and 53021206.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1060400 + ... + 1060449.

It is an arithmetic number, because the mean of its divisors is an integer number (10957725).

Almost surely, 2^53021225 is an apocalyptic number.

It is an amenable number.

53021225 is a deficient number, since it is larger than the sum of its proper divisors (12725125).

53021225 is a wasteful number, since it uses less digits than its factorization.

53021225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120859 (or 2120854 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 53021225 is about 7281.5674823488. The cubic root of 53021225 is about 375.6787116011.

The spelling of 53021225 in words is "fifty-three million, twenty-one thousand, two hundred twenty-five".