151987 has 8 divisors (see below), whose sum is σ = 170352. Its totient is φ = 134400.

The previous prime is 151969. The next prime is 152003. The reversal of 151987 is 789151.

151987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 151987 - 2¹¹ = 149939 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (151937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283 + ... + 619.

It is an arithmetic number, because the mean of its divisors is an integer number (21294).

2¹⁵¹⁹⁸⁷ is an apocalyptic number.

151987 is a deficient number, since it is larger than the sum of its proper divisors (18365).

151987 is a wasteful number, since it uses less digits than its factorization.

151987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389.

The product of its digits is 2520, while the sum is 31.

The square root of 151987 is about 389.8551012876. The cubic root of 151987 is about 53.3665114740.

It can be divided in two parts, 15 and 1987, that added together give a palindrome (2002).

The spelling of 151987 in words is "one hundred fifty-one thousand, nine hundred eighty-seven".