151216505 has 8 divisors (see below), whose sum is σ = 197956224. Its totient is φ = 109975600.

The previous prime is 151216489. The next prime is 151216517. The reversal of 151216505 is 505612151.

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

It is not a de Polignac number, because 151216505 - 2⁴ = 151216489 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1374641 + ... + 1374750.

It is an arithmetic number, because the mean of its divisors is an integer number (24744528).

Almost surely, 2^151216505 is an apocalyptic number.

It is an amenable number.

151216505 is a deficient number, since it is larger than the sum of its proper divisors (46739719).

151216505 is a wasteful number, since it uses less digits than its factorization.

151216505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749407.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 151216505 is about 12297.0120354499. The cubic root of 151216505 is about 532.7617850698.

Adding to 151216505 its reverse (505612151), we get a palindrome (656828656).

The spelling of 151216505 in words is "one hundred fifty-one million, two hundred sixteen thousand, five hundred five".