151172641 has 4 divisors (see below), whose sum is σ = 152871300. Its totient is φ = 149473984.

The previous prime is 151172611. The next prime is 151172669. The reversal of 151172641 is 146271151.

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 16032016 + 135140625 = 4004^2 + 11625^2 .

It is a cyclic number.

It is not a de Polignac number, because 151172641 - 2⁹ = 151172129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151172611) 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, 849196 + ... + 849373.

It is an arithmetic number, because the mean of its divisors is an integer number (38217825).

Almost surely, 2^151172641 is an apocalyptic number.

It is an amenable number.

151172641 is a deficient number, since it is larger than the sum of its proper divisors (1698659).

151172641 is an equidigital number, since it uses as much as digits as its factorization.

151172641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698658.

The product of its digits is 1680, while the sum is 28.

The square root of 151172641 is about 12295.2283834014. The cubic root of 151172641 is about 532.7102666131.

The spelling of 151172641 in words is "one hundred fifty-one million, one hundred seventy-two thousand, six hundred forty-one".