94817521 has 4 divisors (see below), whose sum is σ = 94948672. Its totient is φ = 94686372.

The previous prime is 94817497. The next prime is 94817539. The reversal of 94817521 is 12571849.

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 94817521 - 2¹³ = 94809329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94812521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64485 + ... + 65938.

It is an arithmetic number, because the mean of its divisors is an integer number (23737168).

Almost surely, 2^94817521 is an apocalyptic number.

It is an amenable number.

94817521 is a deficient number, since it is larger than the sum of its proper divisors (131151).

94817521 is a wasteful number, since it uses less digits than its factorization.

94817521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131150.

The product of its digits is 20160, while the sum is 37.

The square root of 94817521 is about 9737.4288700868. The cubic root of 94817521 is about 455.9979240313.

The spelling of 94817521 in words is "ninety-four million, eight hundred seventeen thousand, five hundred twenty-one".