61835491 has 2 divisors, whose sum is σ = 61835492. Its totient is φ = 61835490.

The previous prime is 61835489. The next prime is 61835497. The reversal of 61835491 is 19453816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61835491 - 2¹ = 61835489 is a prime.

It is a super-2 number, since 2×61835491² = 7647255894422162, which contains 22 as substring.

Together with 61835489, 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 61835491.

It is not a weakly prime, because it can be changed into another prime (61835497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30917745 + 30917746.

It is an arithmetic number, because the mean of its divisors is an integer number (30917746).

Almost surely, 2^61835491 is an apocalyptic number.

61835491 is a deficient number, since it is larger than the sum of its proper divisors (1).

61835491 is an equidigital number, since it uses as much as digits as its factorization.

61835491 is an odious number, because the sum of its binary digits is odd.

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

The square root of 61835491 is about 7863.5546033585. The cubic root of 61835491 is about 395.4387924095.

It can be divided in two parts, 61835 and 491, that added together give a palindrome (62326).

The spelling of 61835491 in words is "sixty-one million, eight hundred thirty-five thousand, four hundred ninety-one".