1061005531 has 2 divisors, whose sum is σ = 1061005532. Its totient is φ = 1061005530.

The previous prime is 1061005511. The next prime is 1061005553. The reversal of 1061005531 is 1355001601.

It is an a-pointer prime, because the next prime (1061005553) can be obtained adding 1061005531 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1061005531 - 2⁷ = 1061005403 is a prime.

It is a super-2 number, since 2×1061005531² = 2251465473625183922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061005511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530502765 + 530502766.

It is an arithmetic number, because the mean of its divisors is an integer number (530502766).

Almost surely, 2^1061005531 is an apocalyptic number.

1061005531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061005531 is an equidigital number, since it uses as much as digits as its factorization.

1061005531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1061005531 is about 32573.0798513128. The cubic root of 1061005531 is about 1019.9351269134.

The spelling of 1061005531 in words is "one billion, sixty-one million, five thousand, five hundred thirty-one".