151532121 has 16 divisors (see below), whose sum is σ = 218154944. Its totient is φ = 93006144.

The previous prime is 151532107. The next prime is 151532149. The reversal of 151532121 is 121235151.

It is not a de Polignac number, because 151532121 - 2⁷ = 151531993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151539121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10590 + ... + 20376.

It is an arithmetic number, because the mean of its divisors is an integer number (13634684).

Almost surely, 2^151532121 is an apocalyptic number.

It is an amenable number.

151532121 is a deficient number, since it is larger than the sum of its proper divisors (66622823).

151532121 is a wasteful number, since it uses less digits than its factorization.

151532121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200.

The product of its digits is 300, while the sum is 21.

The square root of 151532121 is about 12309.8383823672. The cubic root of 151532121 is about 533.1321839975.

Adding to 151532121 its reverse (121235151), we get a palindrome (272767272).

The spelling of 151532121 in words is "one hundred fifty-one million, five hundred thirty-two thousand, one hundred twenty-one".