1055531 has 2 divisors, whose sum is σ = 1055532. Its totient is φ = 1055530.

The previous prime is 1055503. The next prime is 1055543. The reversal of 1055531 is 1355501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055531 is a prime.

It is a super-2 number, since 2×1055531² = 2228291383922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1055501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527765 + 527766.

It is an arithmetic number, because the mean of its divisors is an integer number (527766).

2^1055531 is an apocalyptic number.

1055531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055531 is an equidigital number, since it uses as much as digits as its factorization.

1055531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1055531 is about 1027.3903834473. The cubic root of 1055531 is about 101.8177895248.

The spelling of 1055531 in words is "one million, fifty-five thousand, five hundred thirty-one".