215130145 has 8 divisors (see below), whose sum is σ = 258410880. Its totient is φ = 171934320.

The previous prime is 215130137. The next prime is 215130151. The reversal of 215130145 is 541031512.

It is a happy number.

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

It is not a de Polignac number, because 215130145 - 2³ = 215130137 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15511 + ... + 25900.

It is an arithmetic number, because the mean of its divisors is an integer number (32301360).

Almost surely, 2^215130145 is an apocalyptic number.

It is an amenable number.

215130145 is a deficient number, since it is larger than the sum of its proper divisors (43280735).

215130145 is a wasteful number, since it uses less digits than its factorization.

215130145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42455.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 215130145 is about 14667.3155348891. The cubic root of 215130145 is about 599.1934951059.

Adding to 215130145 its reverse (541031512), we get a palindrome (756161657).

The spelling of 215130145 in words is "two hundred fifteen million, one hundred thirty thousand, one hundred forty-five".