90955957 has 2 divisors, whose sum is σ = 90955958. Its totient is φ = 90955956.

The previous prime is 90955937. The next prime is 90955973. The reversal of 90955957 is 75955909.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82464561 + 8491396 = 9081^2 + 2914^2 .

It is an emirp because it is prime and its reverse (75955909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90955957 - 2¹¹ = 90953909 is a prime.

It is a super-2 number, since 2×90955957² = 16545972227571698, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90955957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90955937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45477978 + 45477979.

It is an arithmetic number, because the mean of its divisors is an integer number (45477979).

Almost surely, 2^90955957 is an apocalyptic number.

It is an amenable number.

90955957 is a deficient number, since it is larger than the sum of its proper divisors (1).

90955957 is an equidigital number, since it uses as much as digits as its factorization.

90955957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 637875, while the sum is 49.

The square root of 90955957 is about 9537.0832543289. The cubic root of 90955957 is about 449.7215676764.

The spelling of 90955957 in words is "ninety million, nine hundred fifty-five thousand, nine hundred fifty-seven".