85427551 has 8 divisors (see below), whose sum is σ = 94050000. Its totient is φ = 76947840.

The previous prime is 85427549. The next prime is 85427557. The reversal of 85427551 is 15572458.

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 85427551 - 2¹ = 85427549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85427551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85427557) 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, 34426 + ... + 36823.

It is an arithmetic number, because the mean of its divisors is an integer number (11756250).

Almost surely, 2^85427551 is an apocalyptic number.

85427551 is a deficient number, since it is larger than the sum of its proper divisors (8622449).

85427551 is a wasteful number, since it uses less digits than its factorization.

85427551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71369.

The product of its digits is 56000, while the sum is 37.

The square root of 85427551 is about 9242.7025809554. The cubic root of 85427551 is about 440.4189381102.

The spelling of 85427551 in words is "eighty-five million, four hundred twenty-seven thousand, five hundred fifty-one".