61465543 has 2 divisors, whose sum is σ = 61465544. Its totient is φ = 61465542.

The previous prime is 61465541. The next prime is 61465549. The reversal of 61465543 is 34556416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61465543 - 2¹ = 61465541 is a prime.

Together with 61465541, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 61465499 and 61465508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61465541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30732771 + 30732772.

It is an arithmetic number, because the mean of its divisors is an integer number (30732772).

Almost surely, 2^61465543 is an apocalyptic number.

61465543 is a deficient number, since it is larger than the sum of its proper divisors (1).

61465543 is an equidigital number, since it uses as much as digits as its factorization.

61465543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 61465543 is about 7839.9963647951. The cubic root of 61465543 is about 394.6486070034.

The spelling of 61465543 in words is "sixty-one million, four hundred sixty-five thousand, five hundred forty-three".