90754121 has 2 divisors, whose sum is σ = 90754122. Its totient is φ = 90754120.

The previous prime is 90754099. The next prime is 90754129. The reversal of 90754121 is 12145709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46730896 + 44023225 = 6836^2 + 6635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90754121 is a prime.

It is not a weakly prime, because it can be changed into another prime (90754129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45377060 + 45377061.

It is an arithmetic number, because the mean of its divisors is an integer number (45377061).

Almost surely, 2^90754121 is an apocalyptic number.

It is an amenable number.

90754121 is a deficient number, since it is larger than the sum of its proper divisors (1).

90754121 is an equidigital number, since it uses as much as digits as its factorization.

90754121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 90754121 is about 9526.4957355787. The cubic root of 90754121 is about 449.3886694645.

The spelling of 90754121 in words is "ninety million, seven hundred fifty-four thousand, one hundred twenty-one".