61456511 has 2 divisors, whose sum is σ = 61456512. Its totient is φ = 61456510.

The previous prime is 61456471. The next prime is 61456531. The reversal of 61456511 is 11565416.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61456511 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61456531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30728255 + 30728256.

It is an arithmetic number, because the mean of its divisors is an integer number (30728256).

Almost surely, 2^61456511 is an apocalyptic number.

61456511 is a deficient number, since it is larger than the sum of its proper divisors (1).

61456511 is an equidigital number, since it uses as much as digits as its factorization.

61456511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 29.

The square root of 61456511 is about 7839.4203229576. The cubic root of 61456511 is about 394.6292756260.

The spelling of 61456511 in words is "sixty-one million, four hundred fifty-six thousand, five hundred eleven".