1215552232 has 8 divisors (see below), whose sum is σ = 2279160450. Its totient is φ = 607776112.

The previous prime is 1215552229. The next prime is 1215552287. The reversal of 1215552232 is 2322555121.

It can be written as a sum of positive squares in only one way, i.e., 1180197316 + 35354916 = 34354^2 + 5946^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1215552232.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75972007 + ... + 75972022.

Almost surely, 2^1215552232 is an apocalyptic number.

It is an amenable number.

1215552232 is a deficient number, since it is larger than the sum of its proper divisors (1063608218).

1215552232 is a wasteful number, since it uses less digits than its factorization.

1215552232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151944035 (or 151944031 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 1215552232 is about 34864.7706431578. The cubic root of 1215552232 is about 1067.2296319058.

The spelling of 1215552232 in words is "one billion, two hundred fifteen million, five hundred fifty-two thousand, two hundred thirty-two".