1055326057 has 4 divisors (see below), whose sum is σ = 1055408596. Its totient is φ = 1055243520.

The previous prime is 1055326049. The next prime is 1055326061. The reversal of 1055326057 is 7506235501.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7506235501 = 61 ⋅123053041.

It can be written as a sum of positive squares in 2 ways, for example, as 732189481 + 323136576 = 27059^2 + 17976^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055326057 - 2³ = 1055326049 is a prime.

It is a super-2 number, since 2×1055326057² = 2227426173166334498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055326157) 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, 17544 + ... + 49177.

It is an arithmetic number, because the mean of its divisors is an integer number (263852149).

Almost surely, 2^1055326057 is an apocalyptic number.

It is an amenable number.

1055326057 is a deficient number, since it is larger than the sum of its proper divisors (82539).

1055326057 is an equidigital number, since it uses as much as digits as its factorization.

1055326057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82538.

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 1055326057 is about 32485.7823824516. The cubic root of 1055326057 is about 1018.1119941554. Note that the first 3 decimals are identical.

The spelling of 1055326057 in words is "one billion, fifty-five million, three hundred twenty-six thousand, fifty-seven".