861325403 has 2 divisors, whose sum is σ = 861325404. Its totient is φ = 861325402.

The previous prime is 861325351. The next prime is 861325411. The reversal of 861325403 is 304523168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861325403 - 2²⁶ = 794216539 is a prime.

It is a super-2 number, since 2×861325403² = 1483762899706224818, 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 861325403.

It is not a weakly prime, because it can be changed into another prime (861325453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430662701 + 430662702.

It is an arithmetic number, because the mean of its divisors is an integer number (430662702).

Almost surely, 2^861325403 is an apocalyptic number.

861325403 is a deficient number, since it is larger than the sum of its proper divisors (1).

861325403 is an equidigital number, since it uses as much as digits as its factorization.

861325403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 861325403 is about 29348.3458307278. The cubic root of 861325403 is about 951.4568240994.

The spelling of 861325403 in words is "eight hundred sixty-one million, three hundred twenty-five thousand, four hundred three".