61996541 has 2 divisors, whose sum is σ = 61996542. Its totient is φ = 61996540.

The previous prime is 61996537. The next prime is 61996609. The reversal of 61996541 is 14569916.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57912100 + 4084441 = 7610^2 + 2021^2 .

It is a cyclic number.

It is not a de Polignac number, because 61996541 - 2² = 61996537 is a 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 (61996511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30998270 + 30998271.

It is an arithmetic number, because the mean of its divisors is an integer number (30998271).

Almost surely, 2^61996541 is an apocalyptic number.

It is an amenable number.

61996541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61996541 is an equidigital number, since it uses as much as digits as its factorization.

61996541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 41.

The square root of 61996541 is about 7873.7882242285. The cubic root of 61996541 is about 395.7818004295.

The spelling of 61996541 in words is "sixty-one million, nine hundred ninety-six thousand, five hundred forty-one".