151551331 has 4 divisors (see below), whose sum is σ = 152458992. Its totient is φ = 150643672.

The previous prime is 151551229. The next prime is 151551341. The reversal of 151551331 is 133155151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133155151 = 241 ⋅552511.

It is a cyclic number.

It is not a de Polignac number, because 151551331 - 2⁷ = 151551203 is a prime.

It is a super-2 number, since 2×151551331² = 45935611855743122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 151551296 and 151551305.

It is not an unprimeable number, because it can be changed into a prime (151551341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453580 + ... + 453913.

It is an arithmetic number, because the mean of its divisors is an integer number (38114748).

Almost surely, 2^151551331 is an apocalyptic number.

151551331 is a deficient number, since it is larger than the sum of its proper divisors (907661).

151551331 is an equidigital number, since it uses as much as digits as its factorization.

151551331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907660.

The product of its digits is 1125, while the sum is 25.

The square root of 151551331 is about 12310.6186278351. The cubic root of 151551331 is about 533.1547117547.

The spelling of 151551331 in words is "one hundred fifty-one million, five hundred fifty-one thousand, three hundred thirty-one".