2045557 has 2 divisors, whose sum is σ = 2045558. Its totient is φ = 2045556.

The previous prime is 2045543. The next prime is 2045567. The reversal of 2045557 is 7555402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1874161 + 171396 = 1369^2 + 414^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045557 - 2¹⁵ = 2012789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2045567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1022778 + 1022779.

It is an arithmetic number, because the mean of its divisors is an integer number (1022779).

2^2045557 is an apocalyptic number.

It is an amenable number.

2045557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045557 is an equidigital number, since it uses as much as digits as its factorization.

2045557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 2045557 is about 1430.2297018311. The cubic root of 2045557 is about 126.9415690040.

The spelling of 2045557 in words is "two million, forty-five thousand, five hundred fifty-seven".