235540061 has 2 divisors, whose sum is σ = 235540062. Its totient is φ = 235540060.

The previous prime is 235540031. The next prime is 235540069. The reversal of 235540061 is 160045532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153908836 + 81631225 = 12406^2 + 9035^2 .

It is a cyclic number.

It is not a de Polignac number, because 235540061 - 2¹⁰ = 235539037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 235540061.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235540069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117770030 + 117770031.

It is an arithmetic number, because the mean of its divisors is an integer number (117770031).

Almost surely, 2^235540061 is an apocalyptic number.

It is an amenable number.

235540061 is a deficient number, since it is larger than the sum of its proper divisors (1).

235540061 is an equidigital number, since it uses as much as digits as its factorization.

235540061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 235540061 is about 15347.3144556303. The cubic root of 235540061 is about 617.5729437889.

Adding to 235540061 its reverse (160045532), we get a palindrome (395585593).

The spelling of 235540061 in words is "two hundred thirty-five million, five hundred forty thousand, sixty-one".