215283641 has 4 divisors (see below), whose sum is σ = 219864192. Its totient is φ = 210703092.

The previous prime is 215283619. The next prime is 215283709. The reversal of 215283641 is 146382512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215283641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215283598 and 215283607.

It is not an unprimeable number, because it can be changed into a prime (215283041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2290205 + ... + 2290298.

It is an arithmetic number, because the mean of its divisors is an integer number (54966048).

Almost surely, 2^215283641 is an apocalyptic number.

It is an amenable number.

215283641 is a deficient number, since it is larger than the sum of its proper divisors (4580551).

215283641 is an equidigital number, since it uses as much as digits as its factorization.

215283641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4580550.

The product of its digits is 11520, while the sum is 32.

The square root of 215283641 is about 14672.5471885423. The cubic root of 215283641 is about 599.3359700077.

The spelling of 215283641 in words is "two hundred fifteen million, two hundred eighty-three thousand, six hundred forty-one".