900557071 has 2 divisors, whose sum is σ = 900557072. Its totient is φ = 900557070.

The previous prime is 900557069. The next prime is 900557081. The reversal of 900557071 is 170755009.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (170755009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 900557071 - 2¹ = 900557069 is a prime.

It is a super-2 number, since 2×900557071² = 1622006076256198082, which contains 22 as substring.

Together with 900557069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900557081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450278535 + 450278536.

It is an arithmetic number, because the mean of its divisors is an integer number (450278536).

Almost surely, 2^900557071 is an apocalyptic number.

900557071 is a deficient number, since it is larger than the sum of its proper divisors (1).

900557071 is an equidigital number, since it uses as much as digits as its factorization.

900557071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 900557071 is about 30009.2830804070. The cubic root of 900557071 is about 965.6885457928.

The spelling of 900557071 in words is "nine hundred million, five hundred fifty-seven thousand, seventy-one".