155117146 has 8 divisors (see below), whose sum is σ = 246362580. Its totient is φ = 72996288.

The previous prime is 155117119. The next prime is 155117153. The reversal of 155117146 is 641711551.

It can be written as a sum of positive squares in 2 ways, for example, as 154878025 + 239121 = 12445^2 + 489^2 .

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

It is a super-2 number, since 2×155117146² = 48122657966370632, which contains 22 as substring.

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, 2281101 + ... + 2281168.

Almost surely, 2^155117146 is an apocalyptic number.

155117146 is a deficient number, since it is larger than the sum of its proper divisors (91245434).

155117146 is a wasteful number, since it uses less digits than its factorization.

155117146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562288.

The product of its digits is 4200, while the sum is 31.

The square root of 155117146 is about 12454.6034059700. The cubic root of 155117146 is about 537.3038286103.

Adding to 155117146 its reverse (641711551), we get a palindrome (796828697).

The spelling of 155117146 in words is "one hundred fifty-five million, one hundred seventeen thousand, one hundred forty-six".