775242151 has 4 divisors (see below), whose sum is σ = 776834512. Its totient is φ = 773649792.

The previous prime is 775242137. The next prime is 775242157. The reversal of 775242151 is 151242577.

775242151 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.

It is a cyclic number.

It is not a de Polignac number, because 775242151 - 2⁵ = 775242119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775242157) 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, 795450 + ... + 796423.

It is an arithmetic number, because the mean of its divisors is an integer number (194208628).

Almost surely, 2^775242151 is an apocalyptic number.

775242151 is a deficient number, since it is larger than the sum of its proper divisors (1592361).

775242151 is a wasteful number, since it uses less digits than its factorization.

775242151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592360.

The product of its digits is 19600, while the sum is 34.

The square root of 775242151 is about 27843.1706348253. The cubic root of 775242151 is about 918.6409324243.

The spelling of 775242151 in words is "seven hundred seventy-five million, two hundred forty-two thousand, one hundred fifty-one".