1055656567 has 4 divisors (see below), whose sum is σ = 1206464656. Its totient is φ = 904848480.

The previous prime is 1055656559. The next prime is 1055656573. The reversal of 1055656567 is 7656565501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7656565501 = 13 ⋅588966577.

It is a cyclic number.

It is not a de Polignac number, because 1055656567 - 2³ = 1055656559 is a prime.

It is a super-2 number, since 2×1055656567² = 2228821574900450978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055656517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75404034 + ... + 75404047.

It is an arithmetic number, because the mean of its divisors is an integer number (301616164).

Almost surely, 2^1055656567 is an apocalyptic number.

1055656567 is a deficient number, since it is larger than the sum of its proper divisors (150808089).

1055656567 is an equidigital number, since it uses as much as digits as its factorization.

1055656567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150808088.

The product of its (nonzero) digits is 945000, while the sum is 46.

The square root of 1055656567 is about 32490.8689788377. The cubic root of 1055656567 is about 1018.2182681266.

The spelling of 1055656567 in words is "one billion, fifty-five million, six hundred fifty-six thousand, five hundred sixty-seven".