2056605545 has 8 divisors (see below), whose sum is σ = 2508384840. Its totient is φ = 1618312320.

The previous prime is 2056605541. The next prime is 2056605547. The reversal of 2056605545 is 5455066502.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50282281 + 2006323264 = 7091^2 + 44792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2056605545 - 2² = 2056605541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2056605499 and 2056605508.

It is not an unprimeable number, because it can be changed into a prime (2056605541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3371180 + ... + 3371789.

It is an arithmetic number, because the mean of its divisors is an integer number (313548105).

Almost surely, 2^2056605545 is an apocalyptic number.

It is an amenable number.

2056605545 is a deficient number, since it is larger than the sum of its proper divisors (451779295).

2056605545 is an equidigital number, since it uses as much as digits as its factorization.

2056605545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743035.

The product of its (nonzero) digits is 180000, while the sum is 38.

The square root of 2056605545 is about 45349.8130646643. The cubic root of 2056605545 is about 1271.6970606271.

The spelling of 2056605545 in words is "two billion, fifty-six million, six hundred five thousand, five hundred forty-five".