151538 has 8 divisors (see below), whose sum is σ = 240732. Its totient is φ = 71296.

The previous prime is 151537. The next prime is 151549. The reversal of 151538 is 835151.

It can be written as a sum of positive squares in 2 ways, for example, as 142129 + 9409 = 377^2 + 97^2 .

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

It is not an unprimeable number, because it can be changed into a prime (151531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195 + ... + 2262.

2¹⁵¹⁵³⁸ is an apocalyptic number.

151538 is a deficient number, since it is larger than the sum of its proper divisors (89194).

151538 is a wasteful number, since it uses less digits than its factorization.

151538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4476.

The product of its digits is 600, while the sum is 23.

The square root of 151538 is about 389.2788203846. The cubic root of 151538 is about 53.3139078561.

Adding to 151538 its reverse (835151), we get a palindrome (986689).

The spelling of 151538 in words is "one hundred fifty-one thousand, five hundred thirty-eight".