955676021 has 2 divisors, whose sum is σ = 955676022. Its totient is φ = 955676020.

The previous prime is 955675999. The next prime is 955676023. The reversal of 955676021 is 120676559.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955675396 + 625 = 30914^2 + 25^2 .

It is an emirp because it is prime and its reverse (120676559) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 955676021 - 2¹⁰ = 955674997 is a prime.

It is a super-2 number, since 2×955676021² = 1826633314228784882, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 955676023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 955676021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (955676023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477838010 + 477838011.

It is an arithmetic number, because the mean of its divisors is an integer number (477838011).

Almost surely, 2^955676021 is an apocalyptic number.

It is an amenable number.

955676021 is a deficient number, since it is larger than the sum of its proper divisors (1).

955676021 is an equidigital number, since it uses as much as digits as its factorization.

955676021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 955676021 is about 30914.0101086870. The cubic root of 955676021 is about 985.0015103003.

The spelling of 955676021 in words is "nine hundred fifty-five million, six hundred seventy-six thousand, twenty-one".