53315215 has 4 divisors (see below), whose sum is σ = 63978264. Its totient is φ = 42652168.

The previous prime is 53315209. The next prime is 53315221. The reversal of 53315215 is 51251335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51251335 = 5 ⋅10250267.

It is an interprime number because it is at equal distance from previous prime (53315209) and next prime (53315221).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53315215 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53315215.

It is a congruent 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, 5331517 + ... + 5331526.

It is an arithmetic number, because the mean of its divisors is an integer number (15994566).

Almost surely, 2^53315215 is an apocalyptic number.

53315215 is a deficient number, since it is larger than the sum of its proper divisors (10663049).

53315215 is a wasteful number, since it uses less digits than its factorization.

53315215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663048.

The product of its digits is 2250, while the sum is 25.

The square root of 53315215 is about 7301.7268505471. The cubic root of 53315215 is about 376.3717817135.

The spelling of 53315215 in words is "fifty-three million, three hundred fifteen thousand, two hundred fifteen".