87077121 has 4 divisors (see below), whose sum is σ = 116102832. Its totient is φ = 58051412.

The previous prime is 87077117. The next prime is 87077129. The reversal of 87077121 is 12177078.

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 87077121 - 2² = 87077117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87077129) 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, 14512851 + ... + 14512856.

It is an arithmetic number, because the mean of its divisors is an integer number (29025708).

Almost surely, 2^87077121 is an apocalyptic number.

It is an amenable number.

87077121 is a deficient number, since it is larger than the sum of its proper divisors (29025711).

87077121 is a wasteful number, since it uses less digits than its factorization.

87077121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29025710.

The product of its (nonzero) digits is 5488, while the sum is 33.

The square root of 87077121 is about 9331.5122568638. The cubic root of 87077121 is about 443.2356533184.

The spelling of 87077121 in words is "eighty-seven million, seventy-seven thousand, one hundred twenty-one".