9521957 has 2 divisors, whose sum is σ = 9521958. Its totient is φ = 9521956.

The previous prime is 9521903. The next prime is 9521959. The reversal of 9521957 is 7591259.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7214596 + 2307361 = 2686^2 + 1519^2 .

It is a cyclic number.

It is not a de Polignac number, because 9521957 - 2¹⁰ = 9520933 is a prime.

Together with 9521959, it forms a pair of twin primes.

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 9521957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9521959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4760978 + 4760979.

It is an arithmetic number, because the mean of its divisors is an integer number (4760979).

Almost surely, 2^9521957 is an apocalyptic number.

It is an amenable number.

9521957 is a deficient number, since it is larger than the sum of its proper divisors (1).

9521957 is an equidigital number, since it uses as much as digits as its factorization.

9521957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 38.

The square root of 9521957 is about 3085.7668414837. The cubic root of 9521957 is about 211.9542220488.

The spelling of 9521957 in words is "nine million, five hundred twenty-one thousand, nine hundred fifty-seven".