1533172132 has 24 divisors (see below), whose sum is σ = 2858327136. Its totient is φ = 717061248.

The previous prime is 1533172129. The next prime is 1533172141. The reversal of 1533172132 is 2312713351.

It is a self number, because there is not a number n which added to its sum of digits gives 1533172132.

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, 58078 + ... + 80245.

It is an arithmetic number, because the mean of its divisors is an integer number (119096964).

Almost surely, 2^1533172132 is an apocalyptic number.

It is an amenable number.

1533172132 is a deficient number, since it is larger than the sum of its proper divisors (1325155004).

1533172132 is a wasteful number, since it uses less digits than its factorization.

1533172132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138507 (or 138505 counting only the distinct ones).

The product of its digits is 3780, while the sum is 28.

The square root of 1533172132 is about 39155.7420054837. The cubic root of 1533172132 is about 1153.0911498420.

Adding to 1533172132 its reverse (2312713351), we get a palindrome (3845885483).

The spelling of 1533172132 in words is "one billion, five hundred thirty-three million, one hundred seventy-two thousand, one hundred thirty-two".