151568155 has 4 divisors (see below), whose sum is σ = 181881792. Its totient is φ = 121254520.

The previous prime is 151568147. The next prime is 151568159. The reversal of 151568155 is 551865151.

It is a happy number.

151568155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551865151 = 23 ⋅23994137.

It is not a de Polignac number, because 151568155 - 2³ = 151568147 is a prime.

It is a super-2 number, since 2×151568155² = 45945811220208050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151568159) 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, 15156811 + ... + 15156820.

It is an arithmetic number, because the mean of its divisors is an integer number (45470448).

Almost surely, 2^151568155 is an apocalyptic number.

151568155 is a deficient number, since it is larger than the sum of its proper divisors (30313637).

151568155 is an equidigital number, since it uses as much as digits as its factorization.

151568155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30313636.

The product of its digits is 30000, while the sum is 37.

The square root of 151568155 is about 12311.3019214054. The cubic root of 151568155 is about 533.1744398625.

The spelling of 151568155 in words is "one hundred fifty-one million, five hundred sixty-eight thousand, one hundred fifty-five".