155031032 has 64 divisors (see below), whose sum is σ = 334723200. Its totient is φ = 66718080.

The previous prime is 155031029. The next prime is 155031043. The reversal of 155031032 is 230130551.

It is a junction number, because it is equal to n+sod(n) for n = 155030995 and 155031013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131807 + ... + 132977.

It is an arithmetic number, because the mean of its divisors is an integer number (5230050).

Almost surely, 2^155031032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155031032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167361600).

155031032 is an abundant number, since it is smaller than the sum of its proper divisors (179692168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155031032 is a wasteful number, since it uses less digits than its factorization.

155031032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 155031032 is about 12451.1458107276. The cubic root of 155031032 is about 537.2043813045.

Adding to 155031032 its reverse (230130551), we get a palindrome (385161583).

The spelling of 155031032 in words is "one hundred fifty-five million, thirty-one thousand, thirty-two".