155040105 has 32 divisors (see below), whose sum is σ = 275736960. Its totient is φ = 73748480.

The previous prime is 155040097. The next prime is 155040113. The reversal of 155040105 is 501040551.

It is an interprime number because it is at equal distance from previous prime (155040097) and next prime (155040113).

It is not a de Polignac number, because 155040105 - 2³ = 155040097 is a prime.

It is a super-2 number, since 2×155040105² = 48074868316822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120 + ... + 17609.

It is an arithmetic number, because the mean of its divisors is an integer number (8616780).

Almost surely, 2^155040105 is an apocalyptic number.

155040105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155040105 is a deficient number, since it is larger than the sum of its proper divisors (120696855).

155040105 is a wasteful number, since it uses less digits than its factorization.

155040105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17801.

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 155040105 is about 12451.5101493755. The cubic root of 155040105 is about 537.2148608415.

Adding to 155040105 its reverse (501040551), we get a palindrome (656080656).

The spelling of 155040105 in words is "one hundred fifty-five million, forty thousand, one hundred five".