87025821 has 8 divisors (see below), whose sum is σ = 118864704. Its totient is φ = 56602080.

The previous prime is 87025819. The next prime is 87025837. The reversal of 87025821 is 12852078.

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

It is not a de Polignac number, because 87025821 - 2¹ = 87025819 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87025121) 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, 353641 + ... + 353886.

It is an arithmetic number, because the mean of its divisors is an integer number (14858088).

Almost surely, 2^87025821 is an apocalyptic number.

It is an amenable number.

87025821 is a deficient number, since it is larger than the sum of its proper divisors (31838883).

87025821 is a wasteful number, since it uses less digits than its factorization.

87025821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707571.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 87025821 is about 9328.7631012905. The cubic root of 87025821 is about 443.1485946458.

Adding to 87025821 its reverse (12852078), we get a palindrome (99877899).

The spelling of 87025821 in words is "eighty-seven million, twenty-five thousand, eight hundred twenty-one".