90101047 has 2 divisors, whose sum is σ = 90101048. Its totient is φ = 90101046.

The previous prime is 90101029. The next prime is 90101101. The reversal of 90101047 is 74010109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90101047 - 2⁷ = 90100919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90101027) 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, 45050523 + 45050524.

It is an arithmetic number, because the mean of its divisors is an integer number (45050524).

Almost surely, 2^90101047 is an apocalyptic number.

90101047 is a deficient number, since it is larger than the sum of its proper divisors (1).

90101047 is an equidigital number, since it uses as much as digits as its factorization.

90101047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 90101047 is about 9492.1571310214. The cubic root of 90101047 is about 448.3081276703.

The spelling of 90101047 in words is "ninety million, one hundred one thousand, forty-seven".