61534091 has 2 divisors, whose sum is σ = 61534092. Its totient is φ = 61534090.

The previous prime is 61534087. The next prime is 61534093. The reversal of 61534091 is 19043516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61534091 - 2² = 61534087 is a prime.

Together with 61534093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61534093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30767045 + 30767046.

It is an arithmetic number, because the mean of its divisors is an integer number (30767046).

Almost surely, 2^61534091 is an apocalyptic number.

61534091 is a deficient number, since it is larger than the sum of its proper divisors (1).

61534091 is an equidigital number, since it uses as much as digits as its factorization.

61534091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 61534091 is about 7844.3668323199. The cubic root of 61534091 is about 394.7952600229.

The spelling of 61534091 in words is "sixty-one million, five hundred thirty-four thousand, ninety-one".