85649151 has 16 divisors (see below), whose sum is σ = 135014400. Its totient is φ = 47254368.

The previous prime is 85649147. The next prime is 85649153. The reversal of 85649151 is 15194658.

It is not a de Polignac number, because 85649151 - 2² = 85649147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85649153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69711 + ... + 70928.

It is an arithmetic number, because the mean of its divisors is an integer number (8438400).

Almost surely, 2^85649151 is an apocalyptic number.

85649151 is a deficient number, since it is larger than the sum of its proper divisors (49365249).

85649151 is a wasteful number, since it uses less digits than its factorization.

85649151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140678.

The product of its digits is 43200, while the sum is 39.

The square root of 85649151 is about 9254.6826525819. The cubic root of 85649151 is about 440.7994264806.

The spelling of 85649151 in words is "eighty-five million, six hundred forty-nine thousand, one hundred fifty-one".