87797121 has 8 divisors (see below), whose sum is σ = 117106944. Its totient is φ = 58509360.

The previous prime is 87797093. The next prime is 87797131. The reversal of 87797121 is 12179778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87797121 - 2⁶ = 87797057 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (87797131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10051 + ... + 16631.

It is an arithmetic number, because the mean of its divisors is an integer number (14638368).

Almost surely, 2^87797121 is an apocalyptic number.

It is an amenable number.

87797121 is a deficient number, since it is larger than the sum of its proper divisors (29309823).

87797121 is a wasteful number, since it uses less digits than its factorization.

87797121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11031.

The product of its digits is 49392, while the sum is 42.

The square root of 87797121 is about 9370.0117929488. The cubic root of 87797121 is about 444.4539377810.

The spelling of 87797121 in words is "eighty-seven million, seven hundred ninety-seven thousand, one hundred twenty-one".