35571421 has 2 divisors, whose sum is σ = 35571422. Its totient is φ = 35571420.

The previous prime is 35571407. The next prime is 35571443. The reversal of 35571421 is 12417553.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35402500 + 168921 = 5950^2 + 411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35571421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 35571421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35571451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17785710 + 17785711.

It is an arithmetic number, because the mean of its divisors is an integer number (17785711).

Almost surely, 2^35571421 is an apocalyptic number.

It is an amenable number.

35571421 is a deficient number, since it is larger than the sum of its proper divisors (1).

35571421 is an equidigital number, since it uses as much as digits as its factorization.

35571421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 35571421 is about 5964.1781495861. The cubic root of 35571421 is about 328.8771787428.

Adding to 35571421 its reverse (12417553), we get a palindrome (47988974).

The spelling of 35571421 in words is "thirty-five million, five hundred seventy-one thousand, four hundred twenty-one".