53143215 has 16 divisors (see below), whose sum is σ = 85289568. Its totient is φ = 28256256.

The previous prime is 53143213. The next prime is 53143217. The reversal of 53143215 is 51234135.

It is an interprime number because it is at equal distance from previous prime (53143213) and next prime (53143217).

It is not a de Polignac number, because 53143215 - 2¹ = 53143213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (5330598).

Almost surely, 2^53143215 is an apocalyptic number.

53143215 is a deficient number, since it is larger than the sum of its proper divisors (32146353).

53143215 is a wasteful number, since it uses less digits than its factorization.

53143215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10858.

The product of its digits is 1800, while the sum is 24.

The square root of 53143215 is about 7289.9393001588. The cubic root of 53143215 is about 375.9666085293.

The spelling of 53143215 in words is "fifty-three million, one hundred forty-three thousand, two hundred fifteen".