61711541 has 2 divisors, whose sum is σ = 61711542. Its totient is φ = 61711540.

The previous prime is 61711537. The next prime is 61711571. The reversal of 61711541 is 14511716.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47679025 + 14032516 = 6905^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 61711541 - 2² = 61711537 is a prime.

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 61711541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61711511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30855770 + 30855771.

It is an arithmetic number, because the mean of its divisors is an integer number (30855771).

Almost surely, 2^61711541 is an apocalyptic number.

It is an amenable number.

61711541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61711541 is an equidigital number, since it uses as much as digits as its factorization.

61711541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 26.

The square root of 61711541 is about 7855.6693540398. The cubic root of 61711541 is about 395.1743950319.

The spelling of 61711541 in words is "sixty-one million, seven hundred eleven thousand, five hundred forty-one".