87528479 has 4 divisors (see below), whose sum is σ = 87972984. Its totient is φ = 87083976.

The previous prime is 87528451. The next prime is 87528487. The reversal of 87528479 is 97482578.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87528479 - 2¹² = 87524383 is a prime.

It is a super-2 number, since 2×87528479² = 15322469272106882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87528379) 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, 221957 + ... + 222350.

It is an arithmetic number, because the mean of its divisors is an integer number (21993246).

Almost surely, 2^87528479 is an apocalyptic number.

87528479 is a deficient number, since it is larger than the sum of its proper divisors (444505).

87528479 is a wasteful number, since it uses less digits than its factorization.

87528479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444504.

The product of its digits is 1128960, while the sum is 50.

The square root of 87528479 is about 9355.6656096720. The cubic root of 87528479 is about 444.0001606335. Note that the first 3 decimals are identical.

The spelling of 87528479 in words is "eighty-seven million, five hundred twenty-eight thousand, four hundred seventy-nine".