155415332 has 6 divisors (see below), whose sum is σ = 271976838. Its totient is φ = 77707664.

The previous prime is 155415331. The next prime is 155415349. The reversal of 155415332 is 233514551.

It can be written as a sum of positive squares in only one way, i.e., 90516196 + 64899136 = 9514^2 + 8056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155415295 and 155415304.

It is not an unprimeable number, because it can be changed into a prime (155415331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19426913 + ... + 19426920.

It is an arithmetic number, because the mean of its divisors is an integer number (45329473).

Almost surely, 2^155415332 is an apocalyptic number.

It is an amenable number.

155415332 is a deficient number, since it is larger than the sum of its proper divisors (116561506).

155415332 is a wasteful number, since it uses less digits than its factorization.

155415332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38853837 (or 38853835 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 155415332 is about 12466.5685735891. The cubic root of 155415332 is about 537.6478995920.

Adding to 155415332 its reverse (233514551), we get a palindrome (388929883).

The spelling of 155415332 in words is "one hundred fifty-five million, four hundred fifteen thousand, three hundred thirty-two".