35551421 has 2 divisors, whose sum is σ = 35551422. Its totient is φ = 35551420.

The previous prime is 35551409. The next prime is 35551423. The reversal of 35551421 is 12415553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 7778521 = 5270^2 + 2789^2 .

It is an emirp because it is prime and its reverse (12415553) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35551421 - 2⁶ = 35551357 is a prime.

Together with 35551423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35551423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17775710 + 17775711.

It is an arithmetic number, because the mean of its divisors is an integer number (17775711).

Almost surely, 2^35551421 is an apocalyptic number.

It is an amenable number.

35551421 is a deficient number, since it is larger than the sum of its proper divisors (1).

35551421 is an equidigital number, since it uses as much as digits as its factorization.

35551421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3000, while the sum is 26.

The square root of 35551421 is about 5962.5012368971. The cubic root of 35551421 is about 328.8155302198.

Adding to 35551421 its reverse (12415553), we get a palindrome (47966974).

The spelling of 35551421 in words is "thirty-five million, five hundred fifty-one thousand, four hundred twenty-one".