155801132 has 12 divisors (see below), whose sum is σ = 277796736. Its totient is φ = 76430640.

The previous prime is 155801131. The next prime is 155801161. The reversal of 155801132 is 231108551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155801131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367244 + ... + 367667.

It is an arithmetic number, because the mean of its divisors is an integer number (23149728).

Almost surely, 2^155801132 is an apocalyptic number.

It is an amenable number.

155801132 is a deficient number, since it is larger than the sum of its proper divisors (121995604).

155801132 is a wasteful number, since it uses less digits than its factorization.

155801132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734968 (or 734966 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 155801132 is about 12482.0323665660. The cubic root of 155801132 is about 538.0924142091.

Adding to 155801132 its reverse (231108551), we get a palindrome (386909683).

The spelling of 155801132 in words is "one hundred fifty-five million, eight hundred one thousand, one hundred thirty-two".