150001531 has 4 divisors (see below), whose sum is σ = 150029064. Its totient is φ = 149974000.

The previous prime is 150001517. The next prime is 150001559. The reversal of 150001531 is 135100051.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 150001531 - 2⁷ = 150001403 is a prime.

It is a super-2 number, since 2×150001531² = 45000918604687922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150001231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2545 + ... + 17506.

It is an arithmetic number, because the mean of its divisors is an integer number (37507266).

Almost surely, 2^150001531 is an apocalyptic number.

150001531 is a deficient number, since it is larger than the sum of its proper divisors (27533).

150001531 is an equidigital number, since it uses as much as digits as its factorization.

150001531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27532.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 150001531 is about 12247.5112165697. The cubic root of 150001531 is about 531.3310922855.

Adding to 150001531 its reverse (135100051), we get a palindrome (285101582).

The spelling of 150001531 in words is "one hundred fifty million, one thousand, five hundred thirty-one".