215064255 has 16 divisors (see below), whose sum is σ = 393260544. Its totient is φ = 98315040.

The previous prime is 215064253. The next prime is 215064257. The reversal of 215064255 is 552460512.

It is an interprime number because it is at equal distance from previous prime (215064253) and next prime (215064257).

It is not a de Polignac number, because 215064255 - 2¹ = 215064253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215064251) 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, 1024011 + ... + 1024220.

It is an arithmetic number, because the mean of its divisors is an integer number (24578784).

Almost surely, 2^215064255 is an apocalyptic number.

215064255 is a deficient number, since it is larger than the sum of its proper divisors (178196289).

215064255 is a wasteful number, since it uses less digits than its factorization.

215064255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048246.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 215064255 is about 14665.0692122472. The cubic root of 215064255 is about 599.1323152546.

The spelling of 215064255 in words is "two hundred fifteen million, sixty-four thousand, two hundred fifty-five".