61535611 has 2 divisors, whose sum is σ = 61535612. Its totient is φ = 61535610.

The previous prime is 61535609. The next prime is 61535627. The reversal of 61535611 is 11653516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61535611 - 2¹ = 61535609 is a prime.

It is a super-2 number, since 2×61535611² = 7573262842286642, which contains 22 as substring.

Together with 61535609, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61535611.

It is not a weakly prime, because it can be changed into another prime (61535311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30767805 + 30767806.

It is an arithmetic number, because the mean of its divisors is an integer number (30767806).

Almost surely, 2^61535611 is an apocalyptic number.

61535611 is a deficient number, since it is larger than the sum of its proper divisors (1).

61535611 is an equidigital number, since it uses as much as digits as its factorization.

61535611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 61535611 is about 7844.4637165328. The cubic root of 61535611 is about 394.7985107080.

The spelling of 61535611 in words is "sixty-one million, five hundred thirty-five thousand, six hundred eleven".