94156561 has 4 divisors (see below), whose sum is σ = 94317552. Its totient is φ = 93995572.

The previous prime is 94156547. The next prime is 94156583. The reversal of 94156561 is 16565149.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16565149 = 563 ⋅29423.

It is a cyclic number.

It is not a de Polignac number, because 94156561 - 2¹¹ = 94154513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94156561.

It is not an unprimeable number, because it can be changed into a prime (94156501) 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, 79615 + ... + 80788.

It is an arithmetic number, because the mean of its divisors is an integer number (23579388).

Almost surely, 2^94156561 is an apocalyptic number.

It is an amenable number.

94156561 is a deficient number, since it is larger than the sum of its proper divisors (160991).

94156561 is a wasteful number, since it uses less digits than its factorization.

94156561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160990.

The product of its digits is 32400, while the sum is 37.

The square root of 94156561 is about 9703.4303728115. The cubic root of 94156561 is about 454.9358859869.

The spelling of 94156561 in words is "ninety-four million, one hundred fifty-six thousand, five hundred sixty-one".