151155665 has 4 divisors (see below), whose sum is σ = 181386804. Its totient is φ = 120924528.

The previous prime is 151155661. The next prime is 151155703. The reversal of 151155665 is 566551151.

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 87011584 + 64144081 = 9328^2 + 8009^2 .

It is a cyclic number.

It is not a de Polignac number, because 151155665 - 2² = 151155661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151155661) 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, 15115562 + ... + 15115571.

It is an arithmetic number, because the mean of its divisors is an integer number (45346701).

Almost surely, 2^151155665 is an apocalyptic number.

It is an amenable number.

151155665 is a deficient number, since it is larger than the sum of its proper divisors (30231139).

151155665 is an equidigital number, since it uses as much as digits as its factorization.

151155665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30231138.

The product of its digits is 22500, while the sum is 35.

The square root of 151155665 is about 12294.5380149073. The cubic root of 151155665 is about 532.6903255533.

The spelling of 151155665 in words is "one hundred fifty-one million, one hundred fifty-five thousand, six hundred sixty-five".