155501132 has 12 divisors (see below), whose sum is σ = 281510880. Its totient is φ = 75069456.

The previous prime is 155501131. The next prime is 155501141. The reversal of 155501132 is 231105551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155501098 and 155501107.

It is not an unprimeable number, because it can be changed into a prime (155501131) 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, 670148 + ... + 670379.

It is an arithmetic number, because the mean of its divisors is an integer number (23459240).

Almost surely, 2^155501132 is an apocalyptic number.

It is an amenable number.

155501132 is a deficient number, since it is larger than the sum of its proper divisors (126009748).

155501132 is a wasteful number, since it uses less digits than its factorization.

155501132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340560 (or 1340558 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 155501132 is about 12470.0093023221. The cubic root of 155501132 is about 537.7468209849.

Adding to 155501132 its reverse (231105551), we get a palindrome (386606683).

The spelling of 155501132 in words is "one hundred fifty-five million, five hundred one thousand, one hundred thirty-two".