151145321 has 4 divisors (see below), whose sum is σ = 151522644. Its totient is φ = 150768000.

The previous prime is 151145299. The next prime is 151145341. The reversal of 151145321 is 123541151.

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

It can be written as a sum of positive squares in 2 ways, for example, as 147865600 + 3279721 = 12160^2 + 1811^2 .

It is a cyclic number.

It is not a de Polignac number, because 151145321 - 2⁶ = 151145257 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 (151145341) 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, 188060 + ... + 188861.

It is an arithmetic number, because the mean of its divisors is an integer number (37880661).

Almost surely, 2^151145321 is an apocalyptic number.

It is an amenable number.

151145321 is a deficient number, since it is larger than the sum of its proper divisors (377323).

151145321 is an equidigital number, since it uses as much as digits as its factorization.

151145321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377322.

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

The square root of 151145321 is about 12294.1173330988. The cubic root of 151145321 is about 532.6781741190.

Adding to 151145321 its reverse (123541151), we get a palindrome (274686472).

The spelling of 151145321 in words is "one hundred fifty-one million, one hundred forty-five thousand, three hundred twenty-one".