94500021 has 32 divisors (see below), whose sum is σ = 157713408. Its totient is φ = 48896640.

The previous prime is 94500017. The next prime is 94500047. The reversal of 94500021 is 12000549.

It is not a de Polignac number, because 94500021 - 2² = 94500017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94500001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71650 + ... + 72956.

It is an arithmetic number, because the mean of its divisors is an integer number (4928544).

Almost surely, 2^94500021 is an apocalyptic number.

It is an amenable number.

94500021 is a deficient number, since it is larger than the sum of its proper divisors (63213387).

94500021 is a wasteful number, since it uses less digits than its factorization.

94500021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 94500021 is about 9721.1121277352. The cubic root of 94500021 is about 455.4883795212.

The spelling of 94500021 in words is "ninety-four million, five hundred thousand, twenty-one".