904051121 has 2 divisors, whose sum is σ = 904051122. Its totient is φ = 904051120.

The previous prime is 904051091. The next prime is 904051129. The reversal of 904051121 is 121150409.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 903844096 + 207025 = 30064^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 904051121 - 2²² = 899856817 is a prime.

It is not a weakly prime, because it can be changed into another prime (904051129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452025560 + 452025561.

It is an arithmetic number, because the mean of its divisors is an integer number (452025561).

Almost surely, 2^904051121 is an apocalyptic number.

It is an amenable number.

904051121 is a deficient number, since it is larger than the sum of its proper divisors (1).

904051121 is an equidigital number, since it uses as much as digits as its factorization.

904051121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 904051121 is about 30067.4428743117. The cubic root of 904051121 is about 966.9358514047.

The spelling of 904051121 in words is "nine hundred four million, fifty-one thousand, one hundred twenty-one".