155516755 has 16 divisors (see below), whose sum is σ = 190327104. Its totient is φ = 121956480.

The previous prime is 155516747. The next prime is 155516759. The reversal of 155516755 is 557615551.

It is not a de Polignac number, because 155516755 - 2³ = 155516747 is a prime.

It is a super-2 number, since 2×155516755² = 48370922171460050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155516759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113082 + ... + 114448.

It is an arithmetic number, because the mean of its divisors is an integer number (11895444).

Almost surely, 2^155516755 is an apocalyptic number.

155516755 is a deficient number, since it is larger than the sum of its proper divisors (34810349).

155516755 is a wasteful number, since it uses less digits than its factorization.

155516755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its digits is 131250, while the sum is 40.

The square root of 155516755 is about 12470.6357095378. The cubic root of 155516755 is about 537.7648292938.

The spelling of 155516755 in words is "one hundred fifty-five million, five hundred sixteen thousand, seven hundred fifty-five".