53103215 has 16 divisors (see below), whose sum is σ = 69931296. Its totient is φ = 38390400.

The previous prime is 53103199. The next prime is 53103229. The reversal of 53103215 is 51230135.

It is not a de Polignac number, because 53103215 - 2⁴ = 53103199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6725 + ... + 12305.

It is an arithmetic number, because the mean of its divisors is an integer number (4370706).

Almost surely, 2^53103215 is an apocalyptic number.

53103215 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

53103215 is a deficient number, since it is larger than the sum of its proper divisors (16828081).

53103215 is a wasteful number, since it uses less digits than its factorization.

53103215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5770.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 53103215 is about 7287.1952766479. The cubic root of 53103215 is about 375.8722569485.

Subtracting from 53103215 its reverse (51230135), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 53103215 in words is "fifty-three million, one hundred three thousand, two hundred fifteen".