35957921 has 2 divisors, whose sum is σ = 35957922. Its totient is φ = 35957920.

The previous prime is 35957893. The next prime is 35957959. The reversal of 35957921 is 12975953.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34105600 + 1852321 = 5840^2 + 1361^2 .

It is an emirp because it is prime and its reverse (12975953) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35957921 - 2²² = 31763617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (35957981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17978960 + 17978961.

It is an arithmetic number, because the mean of its divisors is an integer number (17978961).

Almost surely, 2^35957921 is an apocalyptic number.

It is an amenable number.

35957921 is a deficient number, since it is larger than the sum of its proper divisors (1).

35957921 is an equidigital number, since it uses as much as digits as its factorization.

35957921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 35957921 is about 5996.4923913902. The cubic root of 35957921 is about 330.0640249205.

The spelling of 35957921 in words is "thirty-five million, nine hundred fifty-seven thousand, nine hundred twenty-one".