75855857 has 16 divisors (see below), whose sum is σ = 95644800. Its totient is φ = 58439040.

The previous prime is 75855839. The next prime is 75855869.

It is a happy number.

75855857 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75855857 - 2¹⁶ = 75790321 is a prime.

It is a super-2 number, since 2×75855857² = 11508222082408898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75855557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319 + ... + 12387.

It is an arithmetic number, because the mean of its divisors is an integer number (5977800).

Almost surely, 2^75855857 is an apocalyptic number.

75855857 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

75855857 is a deficient number, since it is larger than the sum of its proper divisors (19788943).

75855857 is a wasteful number, since it uses less digits than its factorization.

75855857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11176.

The product of its digits is 1960000, while the sum is 50.

The square root of 75855857 is about 8709.5267954120. The cubic root of 75855857 is about 423.3143975796.

The spelling of 75855857 in words is "seventy-five million, eight hundred fifty-five thousand, eight hundred fifty-seven".