94505721 has 4 divisors (see below), whose sum is σ = 126007632. Its totient is φ = 63003812.

The previous prime is 94505707. The next prime is 94505729. The reversal of 94505721 is 12750549.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 94505721 - 2⁶ = 94505657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (94505729) 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 in 3 ways as a sum of consecutive naturals, for example, 15750951 + ... + 15750956.

It is an arithmetic number, because the mean of its divisors is an integer number (31501908).

Almost surely, 2^94505721 is an apocalyptic number.

It is an amenable number.

94505721 is a deficient number, since it is larger than the sum of its proper divisors (31501911).

94505721 is a wasteful number, since it uses less digits than its factorization.

94505721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31501910.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 94505721 is about 9721.4052996468. The cubic root of 94505721 is about 455.4975373025.

The spelling of 94505721 in words is "ninety-four million, five hundred five thousand, seven hundred twenty-one".