85542405 has 32 divisors (see below), whose sum is σ = 153812736. Its totient is φ = 40280064.

The previous prime is 85542367. The next prime is 85542421. The reversal of 85542405 is 50424558.

It is not a de Polignac number, because 85542405 - 2⁹ = 85541893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5052 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (4806648).

Almost surely, 2^85542405 is an apocalyptic number.

It is an amenable number.

85542405 is a deficient number, since it is larger than the sum of its proper divisors (68270331).

85542405 is a wasteful number, since it uses less digits than its factorization.

85542405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117.

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 85542405 is about 9248.9137199998. The cubic root of 85542405 is about 440.6162250654.

The spelling of 85542405 in words is "eighty-five million, five hundred forty-two thousand, four hundred five".