94121557 has 4 divisors (see below), whose sum is σ = 94296076. Its totient is φ = 93947040.

The previous prime is 94121551. The next prime is 94121567. The reversal of 94121557 is 75512149.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49084036 + 45037521 = 7006^2 + 6711^2 .

It is a cyclic number.

It is not a de Polignac number, because 94121557 - 2¹⁹ = 93597269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94121551) 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, 86448 + ... + 87529.

It is an arithmetic number, because the mean of its divisors is an integer number (23574019).

Almost surely, 2^94121557 is an apocalyptic number.

It is an amenable number.

94121557 is a deficient number, since it is larger than the sum of its proper divisors (174519).

94121557 is a wasteful number, since it uses less digits than its factorization.

94121557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174518.

The product of its digits is 12600, while the sum is 34.

The square root of 94121557 is about 9701.6265131162. The cubic root of 94121557 is about 454.8795027694.

The spelling of 94121557 in words is "ninety-four million, one hundred twenty-one thousand, five hundred fifty-seven".