1061620253 has 2 divisors, whose sum is σ = 1061620254. Its totient is φ = 1061620252.

The previous prime is 1061620171. The next prime is 1061620297. The reversal of 1061620253 is 3520261601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561784804 + 499835449 = 23702^2 + 22357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061620253 - 2²⁶ = 994511389 is a prime.

It is a super-2 number, since 2×1061620253² = 2254075123159568018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1061620753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530810126 + 530810127.

It is an arithmetic number, because the mean of its divisors is an integer number (530810127).

Almost surely, 2^1061620253 is an apocalyptic number.

It is an amenable number.

1061620253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061620253 is an equidigital number, since it uses as much as digits as its factorization.

1061620253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1061620253 is about 32582.5145285013. The cubic root of 1061620253 is about 1020.1320644714.

Adding to 1061620253 its reverse (3520261601), we get a palindrome (4581881854).

The spelling of 1061620253 in words is "one billion, sixty-one million, six hundred twenty thousand, two hundred fifty-three".