85224487 has 8 divisors (see below), whose sum is σ = 88755840. Its totient is φ = 81742080.

The previous prime is 85224479. The next prime is 85224509. The reversal of 85224487 is 78442258.

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 85224487 - 2³ = 85224479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85224457) 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, 8662 + ... + 15667.

It is an arithmetic number, because the mean of its divisors is an integer number (11094480).

Almost surely, 2^85224487 is an apocalyptic number.

85224487 is a deficient number, since it is larger than the sum of its proper divisors (3531353).

85224487 is a wasteful number, since it uses less digits than its factorization.

85224487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24473.

The product of its digits is 143360, while the sum is 40.

The square root of 85224487 is about 9231.7109465147. The cubic root of 85224487 is about 440.0696979810.

The spelling of 85224487 in words is "eighty-five million, two hundred twenty-four thousand, four hundred eighty-seven".