69091121 has 6 divisors (see below), whose sum is σ = 75943266. Its totient is φ = 62810000.

The previous prime is 69091117. The next prime is 69091123. The reversal of 69091121 is 12119096.

It can be written as a sum of positive squares in only one way, i.e., 67881121 + 1210000 = 8239^2 + 1100^2 .

It is not a de Polignac number, because 69091121 - 2² = 69091117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69091123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 285380 + ... + 285621.

It is an arithmetic number, because the mean of its divisors is an integer number (12657211).

Almost surely, 2^69091121 is an apocalyptic number.

It is an amenable number.

69091121 is a deficient number, since it is larger than the sum of its proper divisors (6852145).

69091121 is a wasteful number, since it uses less digits than its factorization.

69091121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571023 (or 571012 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 69091121 is about 8312.1068929604. The cubic root of 69091121 is about 410.3370636903.

The spelling of 69091121 in words is "sixty-nine million, ninety-one thousand, one hundred twenty-one".