87225251 has 8 divisors (see below), whose sum is σ = 88911360. Its totient is φ = 85555008.

The previous prime is 87225239. The next prime is 87225253. The reversal of 87225251 is 15252278.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 87225251 - 2¹⁴ = 87208867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87225253) 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, 7445 + ... + 15161.

It is an arithmetic number, because the mean of its divisors is an integer number (11113920).

Almost surely, 2^87225251 is an apocalyptic number.

87225251 is a deficient number, since it is larger than the sum of its proper divisors (1686109).

87225251 is a wasteful number, since it uses less digits than its factorization.

87225251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933.

The product of its digits is 11200, while the sum is 32.

The square root of 87225251 is about 9339.4459685787. The cubic root of 87225251 is about 443.4868456006.

The spelling of 87225251 in words is "eighty-seven million, two hundred twenty-five thousand, two hundred fifty-one".