215452045 has 8 divisors (see below), whose sum is σ = 258677496. Its totient is φ = 172271616.

The previous prime is 215452043. The next prime is 215452051. The reversal of 215452045 is 540254512.

It can be written as a sum of positive squares in 4 ways, for example, as 272484 + 215179561 = 522^2 + 14669^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215452045 - 2¹ = 215452043 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215452043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369 + ... + 20761.

It is an arithmetic number, because the mean of its divisors is an integer number (32334687).

Almost surely, 2^215452045 is an apocalyptic number.

It is an amenable number.

215452045 is a deficient number, since it is larger than the sum of its proper divisors (43225451).

215452045 is a wasteful number, since it uses less digits than its factorization.

215452045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22511.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 215452045 is about 14678.2848112441. The cubic root of 215452045 is about 599.4922046203.

The spelling of 215452045 in words is "two hundred fifteen million, four hundred fifty-two thousand, forty-five".