35491861 has 2 divisors, whose sum is σ = 35491862. Its totient is φ = 35491860.

The previous prime is 35491837. The next prime is 35491871. The reversal of 35491861 is 16819453.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33709636 + 1782225 = 5806^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 35491861 - 2¹¹ = 35489813 is a prime.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 35491861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35491871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17745930 + 17745931.

It is an arithmetic number, because the mean of its divisors is an integer number (17745931).

Almost surely, 2^35491861 is an apocalyptic number.

It is an amenable number.

35491861 is a deficient number, since it is larger than the sum of its proper divisors (1).

35491861 is an equidigital number, since it uses as much as digits as its factorization.

35491861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 35491861 is about 5957.5045950465. The cubic root of 35491861 is about 328.6318038572.

The spelling of 35491861 in words is "thirty-five million, four hundred ninety-one thousand, eight hundred sixty-one".