215542150 has 48 divisors (see below), whose sum is σ = 426669120. Its totient is φ = 80729600.

The previous prime is 215542147. The next prime is 215542169. The reversal of 215542150 is 51245512.

215542150 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202620 + ... + 203680.

It is an arithmetic number, because the mean of its divisors is an integer number (8888940).

Almost surely, 2^215542150 is an apocalyptic number.

215542150 is a deficient number, since it is larger than the sum of its proper divisors (211126970).

215542150 is a wasteful number, since it uses less digits than its factorization.

215542150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1324 counting only the distinct ones).

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

The square root of 215542150 is about 14681.3538204077. The cubic root of 215542150 is about 599.5757649265.

Adding to 215542150 its reverse (51245512), we get a palindrome (266787662).

The spelling of 215542150 in words is "two hundred fifteen million, five hundred forty-two thousand, one hundred fifty".