151278433 has 4 divisors (see below), whose sum is σ = 151836928. Its totient is φ = 150719940.

The previous prime is 151278403. The next prime is 151278511. The reversal of 151278433 is 334872151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 334872151 = 241 ⋅1389511.

It is a cyclic number.

It is not a de Polignac number, because 151278433 - 2⁵ = 151278401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151278403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278841 + ... + 279382.

It is an arithmetic number, because the mean of its divisors is an integer number (37959232).

Almost surely, 2^151278433 is an apocalyptic number.

It is an amenable number.

151278433 is a deficient number, since it is larger than the sum of its proper divisors (558495).

151278433 is an equidigital number, since it uses as much as digits as its factorization.

151278433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558494.

The product of its digits is 20160, while the sum is 34.

The square root of 151278433 is about 12299.5297877602. The cubic root of 151278433 is about 532.8345028131.

The spelling of 151278433 in words is "one hundred fifty-one million, two hundred seventy-eight thousand, four hundred thirty-three".