1055866403 has 2 divisors, whose sum is σ = 1055866404. Its totient is φ = 1055866402.

The previous prime is 1055866387. The next prime is 1055866429. The reversal of 1055866403 is 3046685501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055866403 - 2⁴ = 1055866387 is a prime.

It is a super-2 number, since 2×1055866403² = 2229707721968316818, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1055866433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527933201 + 527933202.

It is an arithmetic number, because the mean of its divisors is an integer number (527933202).

Almost surely, 2^1055866403 is an apocalyptic number.

1055866403 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055866403 is an equidigital number, since it uses as much as digits as its factorization.

1055866403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 1055866403 is about 32494.0979717856. The cubic root of 1055866403 is about 1018.2857284163.

The spelling of 1055866403 in words is "one billion, fifty-five million, eight hundred sixty-six thousand, four hundred three".