215105452 has 12 divisors (see below), whose sum is σ = 377515600. Its totient is φ = 107243856.

The previous prime is 215105431. The next prime is 215105467. The reversal of 215105452 is 254501512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75648 + ... + 78439.

Almost surely, 2^215105452 is an apocalyptic number.

It is an amenable number.

215105452 is a deficient number, since it is larger than the sum of its proper divisors (162410148).

215105452 is a wasteful number, since it uses less digits than its factorization.

215105452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154440 (or 154438 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 215105452 is about 14666.4737411554. The cubic root of 215105452 is about 599.1705687495.

Adding to 215105452 its reverse (254501512), we get a palindrome (469606964).

It can be divided in two parts, 21510 and 5452, that added together give a palindrome (26962).

The spelling of 215105452 in words is "two hundred fifteen million, one hundred five thousand, four hundred fifty-two".