155532115 has 8 divisors (see below), whose sum is σ = 192659328. Its totient is φ = 120411840.

The previous prime is 155532101. The next prime is 155532137. The reversal of 155532115 is 511235551.

155532115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155532115 - 2⁹ = 155531603 is a prime.

It is a Duffinian number.

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, 501562 + ... + 501871.

It is an arithmetic number, because the mean of its divisors is an integer number (24082416).

Almost surely, 2^155532115 is an apocalyptic number.

155532115 is a deficient number, since it is larger than the sum of its proper divisors (37127213).

155532115 is a wasteful number, since it uses less digits than its factorization.

155532115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003469.

The product of its digits is 3750, while the sum is 28.

The square root of 155532115 is about 12471.2515410443. The cubic root of 155532115 is about 537.7825332722.

Adding to 155532115 its reverse (511235551), we get a palindrome (666767666).

It can be divided in two parts, 1555 and 32115, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 155532115 in words is "one hundred fifty-five million, five hundred thirty-two thousand, one hundred fifteen".