891156053 has 2 divisors, whose sum is σ = 891156054. Its totient is φ = 891156052.

The previous prime is 891156047. The next prime is 891156061. The reversal of 891156053 is 350651198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 631366129 + 259789924 = 25127^2 + 16118^2 .

It is a cyclic number.

It is not a de Polignac number, because 891156053 - 2¹⁰ = 891155029 is a prime.

It is a super-2 number, since 2×891156053² = 1588318221597077618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 891155998 and 891156016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891156023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445578026 + 445578027.

It is an arithmetic number, because the mean of its divisors is an integer number (445578027).

Almost surely, 2^891156053 is an apocalyptic number.

It is an amenable number.

891156053 is a deficient number, since it is larger than the sum of its proper divisors (1).

891156053 is an equidigital number, since it uses as much as digits as its factorization.

891156053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 891156053 is about 29852.2369848559. The cubic root of 891156053 is about 962.3164736492.

The spelling of 891156053 in words is "eight hundred ninety-one million, one hundred fifty-six thousand, fifty-three".