61201541 has 2 divisors, whose sum is σ = 61201542. Its totient is φ = 61201540.

The previous prime is 61201531. The next prime is 61201549. The reversal of 61201541 is 14510216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59737441 + 1464100 = 7729^2 + 1210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61201541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61201549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30600770 + 30600771.

It is an arithmetic number, because the mean of its divisors is an integer number (30600771).

Almost surely, 2^61201541 is an apocalyptic number.

It is an amenable number.

61201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61201541 is an equidigital number, since it uses as much as digits as its factorization.

61201541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 61201541 is about 7823.1413767105. The cubic root of 61201541 is about 394.0827748305.

Adding to 61201541 its reverse (14510216), we get a palindrome (75711757).

The spelling of 61201541 in words is "sixty-one million, two hundred one thousand, five hundred forty-one".