856158053 has 2 divisors, whose sum is σ = 856158054. Its totient is φ = 856158052.

The previous prime is 856158019. The next prime is 856158077. The reversal of 856158053 is 350851658.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 842334529 + 13823524 = 29023^2 + 3718^2 .

It is a cyclic number.

It is not a de Polignac number, because 856158053 - 2¹⁴ = 856141669 is a prime.

It is a super-2 number, since 2×856158053² = 1466013223433501618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 856158053.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856158353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428079026 + 428079027.

It is an arithmetic number, because the mean of its divisors is an integer number (428079027).

Almost surely, 2^856158053 is an apocalyptic number.

It is an amenable number.

856158053 is a deficient number, since it is larger than the sum of its proper divisors (1).

856158053 is an equidigital number, since it uses as much as digits as its factorization.

856158053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 856158053 is about 29260.1786221479. The cubic root of 856158053 is about 949.5503145974.

The spelling of 856158053 in words is "eight hundred fifty-six million, one hundred fifty-eight thousand, fifty-three".