861053 has 2 divisors, whose sum is σ = 861054. Its totient is φ = 861052.

The previous prime is 861043. The next prime is 861059. The reversal of 861053 is 350168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 840889 + 20164 = 917^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 861053 - 2⁴ = 861037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430526 + 430527.

It is an arithmetic number, because the mean of its divisors is an integer number (430527).

2⁸⁶¹⁰⁵³ is an apocalyptic number.

It is an amenable number.

861053 is a deficient number, since it is larger than the sum of its proper divisors (1).

861053 is an equidigital number, since it uses as much as digits as its factorization.

861053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 861053 is about 927.9294154191. The cubic root of 861053 is about 95.1356510861.

The spelling of 861053 in words is "eight hundred sixty-one thousand, fifty-three".