87085451 has 4 divisors (see below), whose sum is σ = 87108672. Its totient is φ = 87062232.

The previous prime is 87085447. The next prime is 87085459. The reversal of 87085451 is 15458078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15458078 = 2 ⋅7729039.

It is a cyclic number.

It is not a de Polignac number, because 87085451 - 2² = 87085447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87085459) 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, 4556 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (21777168).

Almost surely, 2^87085451 is an apocalyptic number.

87085451 is a deficient number, since it is larger than the sum of its proper divisors (23221).

87085451 is a wasteful number, since it uses less digits than its factorization.

87085451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23220.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 87085451 is about 9331.9585832771. The cubic root of 87085451 is about 443.2497865190.

The spelling of 87085451 in words is "eighty-seven million, eighty-five thousand, four hundred fifty-one".