44555557 has 2 divisors, whose sum is σ = 44555558. Its totient is φ = 44555556.

The previous prime is 44555543. The next prime is 44555569. The reversal of 44555557 is 75555544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44275716 + 279841 = 6654^2 + 529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44555557 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44555527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22277778 + 22277779.

It is an arithmetic number, because the mean of its divisors is an integer number (22277779).

Almost surely, 2^44555557 is an apocalyptic number.

It is an amenable number.

44555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

44555557 is an equidigital number, since it uses as much as digits as its factorization.

44555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350000, while the sum is 40.

The square root of 44555557 is about 6674.9949063651. The cubic root of 44555557 is about 354.5144641830.

The spelling of 44555557 in words is "forty-four million, five hundred fifty-five thousand, five hundred fifty-seven".