53002505 has 4 divisors (see below), whose sum is σ = 63603012. Its totient is φ = 42402000.

The previous prime is 53002493. The next prime is 53002513. The reversal of 53002505 is 50520035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50520035 = 5 ⋅10104007.

It can be written as a sum of positive squares in 2 ways, for example, as 41422096 + 11580409 = 6436^2 + 3403^2 .

It is not a de Polignac number, because 53002505 - 2⁴ = 53002489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300246 + ... + 5300255.

It is an arithmetic number, because the mean of its divisors is an integer number (15900753).

Almost surely, 2^53002505 is an apocalyptic number.

It is an amenable number.

53002505 is a deficient number, since it is larger than the sum of its proper divisors (10600507).

53002505 is a wasteful number, since it uses less digits than its factorization.

53002505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600506.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 53002505 is about 7280.2819313540. The cubic root of 53002505 is about 375.6344932508.

The spelling of 53002505 in words is "fifty-three million, two thousand, five hundred five".