94975021 has 2 divisors, whose sum is σ = 94975022. Its totient is φ = 94975020.

The previous prime is 94975009. The next prime is 94975037. The reversal of 94975021 is 12057949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79655625 + 15319396 = 8925^2 + 3914^2 .

It is an emirp because it is prime and its reverse (12057949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94975021 - 2⁵ = 94974989 is a prime.

It is a super-2 number, since 2×94975021² = 18040509227900882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94975051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47487510 + 47487511.

It is an arithmetic number, because the mean of its divisors is an integer number (47487511).

Almost surely, 2^94975021 is an apocalyptic number.

It is an amenable number.

94975021 is a deficient number, since it is larger than the sum of its proper divisors (1).

94975021 is an equidigital number, since it uses as much as digits as its factorization.

94975021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 94975021 is about 9745.5128649035. The cubic root of 94975021 is about 456.2502681927.

The spelling of 94975021 in words is "ninety-four million, nine hundred seventy-five thousand, twenty-one".