857387541 has 16 divisors (see below), whose sum is σ = 1154009088. Its totient is φ = 566193600.

The previous prime is 857387473. The next prime is 857387591. The reversal of 857387541 is 145783758.

It is a happy number.

It is not a de Polignac number, because 857387541 - 2⁹ = 857387029 is a prime.

It is a super-2 number, since 2×857387541² = 1470226790924053362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857387591) 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, 311431 + ... + 314171.

It is an arithmetic number, because the mean of its divisors is an integer number (72125568).

Almost surely, 2^857387541 is an apocalyptic number.

It is an amenable number.

857387541 is a deficient number, since it is larger than the sum of its proper divisors (296621547).

857387541 is a wasteful number, since it uses less digits than its factorization.

857387541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3692.

The product of its digits is 940800, while the sum is 48.

The square root of 857387541 is about 29281.1806626714. The cubic root of 857387541 is about 950.0046319257.

The spelling of 857387541 in words is "eight hundred fifty-seven million, three hundred eighty-seven thousand, five hundred forty-one".