70571121 has 4 divisors (see below), whose sum is σ = 94094832. Its totient is φ = 47047412.

The previous prime is 70571119. The next prime is 70571129. The reversal of 70571121 is 12117507.

It is a happy number.

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: 12117507 = 3 ⋅4039169.

It is a cyclic number.

It is not a de Polignac number, because 70571121 - 2¹ = 70571119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70571091 and 70571100.

It is not an unprimeable number, because it can be changed into a prime (70571129) 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, 11761851 + ... + 11761856.

It is an arithmetic number, because the mean of its divisors is an integer number (23523708).

Almost surely, 2^70571121 is an apocalyptic number.

It is an amenable number.

70571121 is a deficient number, since it is larger than the sum of its proper divisors (23523711).

70571121 is a wasteful number, since it uses less digits than its factorization.

70571121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23523710.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 70571121 is about 8400.6619382046. The cubic root of 70571121 is about 413.2463300373.

Adding to 70571121 its reverse (12117507), we get a palindrome (82688628).

The spelling of 70571121 in words is "seventy million, five hundred seventy-one thousand, one hundred twenty-one".