153091121 has 2 divisors, whose sum is σ = 153091122. Its totient is φ = 153091120.

The previous prime is 153091109. The next prime is 153091139. The reversal of 153091121 is 121190351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 32947600 = 10961^2 + 5740^2 .

It is an emirp because it is prime and its reverse (121190351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-153091121 is a prime.

It is not a weakly prime, because it can be changed into another prime (153091321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76545560 + 76545561.

It is an arithmetic number, because the mean of its divisors is an integer number (76545561).

Almost surely, 2^153091121 is an apocalyptic number.

It is an amenable number.

153091121 is a deficient number, since it is larger than the sum of its proper divisors (1).

153091121 is an equidigital number, since it uses as much as digits as its factorization.

153091121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 153091121 is about 12372.9996767154. Note that the first 3 decimals coincide. The cubic root of 153091121 is about 534.9542814748.

The spelling of 153091121 in words is "one hundred fifty-three million, ninety-one thousand, one hundred twenty-one".