1061405253 has 18 divisors (see below), whose sum is σ = 1571469042. Its totient is φ = 690335040.

The previous prime is 1061405239. The next prime is 1061405269. The reversal of 1061405253 is 3525041601.

1061405253 is a `hidden beast` number, since 1 + 0 + 6 + 1 + 405 + 253 = 666.

1061405253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 133471809 + 927933444 = 11553^2 + 30462^2 .

It is not a de Polignac number, because 1061405253 - 2²⁹ = 524534341 is a prime.

It is a super-2 number, since 2×1061405253² = 2253162222191988018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061415253) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19950 + ... + 50207.

Almost surely, 2^1061405253 is an apocalyptic number.

It is an amenable number.

1061405253 is a deficient number, since it is larger than the sum of its proper divisors (510063789).

1061405253 is an equidigital number, since it uses as much as digits as its factorization.

1061405253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70245 (or 70201 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1061405253 is about 32579.2150457926. The cubic root of 1061405253 is about 1020.0631938933.

Adding to 1061405253 its reverse (3525041601), we get a palindrome (4586446854).

The spelling of 1061405253 in words is "one billion, sixty-one million, four hundred five thousand, two hundred fifty-three".