215134953 has 16 divisors (see below), whose sum is σ = 313341696. Its totient is φ = 130210640.

The previous prime is 215134919. The next prime is 215134961. The reversal of 215134953 is 359431512.

It is a cyclic number.

It is not a de Polignac number, because 215134953 - 2⁶ = 215134889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (215134973) 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, 23350 + ... + 31232.

It is an arithmetic number, because the mean of its divisors is an integer number (19583856).

Almost surely, 2^215134953 is an apocalyptic number.

It is an amenable number.

215134953 is a deficient number, since it is larger than the sum of its proper divisors (98206743).

215134953 is a wasteful number, since it uses less digits than its factorization.

215134953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8724.

The product of its digits is 16200, while the sum is 33.

The square root of 215134953 is about 14667.4794358131. The cubic root of 215134953 is about 599.1979589168.

The spelling of 215134953 in words is "two hundred fifteen million, one hundred thirty-four thousand, nine hundred fifty-three".