76157121 has 4 divisors (see below), whose sum is σ = 101542832. Its totient is φ = 50771412.

The previous prime is 76157119. The next prime is 76157129. The reversal of 76157121 is 12175167.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12175167 = 3 ⋅4058389.

It is not a de Polignac number, because 76157121 - 2¹ = 76157119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76157129) 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, 12692851 + ... + 12692856.

It is an arithmetic number, because the mean of its divisors is an integer number (25385708).

Almost surely, 2^76157121 is an apocalyptic number.

It is an amenable number.

76157121 is a deficient number, since it is larger than the sum of its proper divisors (25385711).

76157121 is a wasteful number, since it uses less digits than its factorization.

76157121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25385710.

The product of its digits is 2940, while the sum is 30.

The square root of 76157121 is about 8726.8047417139. The cubic root of 76157121 is about 423.8740596202.

The spelling of 76157121 in words is "seventy-six million, one hundred fifty-seven thousand, one hundred twenty-one".