857955534 has 16 divisors (see below), whose sum is σ = 1716274560. Its totient is φ = 285924600.

The previous prime is 857955533. The next prime is 857955547. The reversal of 857955534 is 435559758.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857955533) 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, 22887 + ... + 47325.

It is an arithmetic number, because the mean of its divisors is an integer number (107267160).

Almost surely, 2^857955534 is an apocalyptic number.

857955534 is an abundant number, since it is smaller than the sum of its proper divisors (858319026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857955534 is a wasteful number, since it uses less digits than its factorization.

857955534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30295.

The product of its digits is 3780000, while the sum is 51.

The square root of 857955534 is about 29290.8779998142. The cubic root of 857955534 is about 950.2143686137.

The spelling of 857955534 in words is "eight hundred fifty-seven million, nine hundred fifty-five thousand, five hundred thirty-four".