155161506 has 8 divisors (see below), whose sum is σ = 310323024. Its totient is φ = 51720500.

The previous prime is 155161459. The next prime is 155161549. The reversal of 155161506 is 605161551.

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

155161506 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12930120 + ... + 12930131.

It is an arithmetic number, because the mean of its divisors is an integer number (38790378).

Almost surely, 2^155161506 is an apocalyptic number.

155161506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

155161506 is a wasteful number, since it uses less digits than its factorization.

155161506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25860256.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 155161506 is about 12456.3841462922. The cubic root of 155161506 is about 537.3550426481.

The spelling of 155161506 in words is "one hundred fifty-five million, one hundred sixty-one thousand, five hundred six".