1055651709 has 32 divisors (see below), whose sum is σ = 1625299200. Its totient is φ = 597007872.

The previous prime is 1055651693. The next prime is 1055651713. The reversal of 1055651709 is 9071565501.

It is not a de Polignac number, because 1055651709 - 2⁴ = 1055651693 is a prime.

It is a super-2 number, since 2×1055651709² = 2228801061429241362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055651749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1005817 + ... + 1006865.

It is an arithmetic number, because the mean of its divisors is an integer number (50790600).

Almost surely, 2^1055651709 is an apocalyptic number.

It is an amenable number.

1055651709 is a deficient number, since it is larger than the sum of its proper divisors (569647491).

1055651709 is a wasteful number, since it uses less digits than its factorization.

1055651709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509.

The product of its (nonzero) digits is 47250, while the sum is 39.

The square root of 1055651709 is about 32490.7942192862. The cubic root of 1055651709 is about 1018.2167062197.

The spelling of 1055651709 in words is "one billion, fifty-five million, six hundred fifty-one thousand, seven hundred nine".