85442751 has 6 divisors (see below), whose sum is σ = 123417320. Its totient is φ = 56961828.

The previous prime is 85442719. The next prime is 85442767. The reversal of 85442751 is 15724458.

It is not a de Polignac number, because 85442751 - 2⁵ = 85442719 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 (85442701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4746811 + ... + 4746828.

Almost surely, 2^85442751 is an apocalyptic number.

85442751 is a deficient number, since it is larger than the sum of its proper divisors (37974569).

85442751 is a wasteful number, since it uses less digits than its factorization.

85442751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9493645 (or 9493642 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 85442751 is about 9243.5248147014. The cubic root of 85442751 is about 440.4450575950.

The spelling of 85442751 in words is "eighty-five million, four hundred forty-two thousand, seven hundred fifty-one".