61240541 has 2 divisors, whose sum is σ = 61240542. Its totient is φ = 61240540.

The previous prime is 61240537. The next prime is 61240561. The reversal of 61240541 is 14504216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43178041 + 18062500 = 6571^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 61240541 - 2² = 61240537 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61240561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30620270 + 30620271.

It is an arithmetic number, because the mean of its divisors is an integer number (30620271).

Almost surely, 2^61240541 is an apocalyptic number.

It is an amenable number.

61240541 is a deficient number, since it is larger than the sum of its proper divisors (1).

61240541 is an equidigital number, since it uses as much as digits as its factorization.

61240541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 61240541 is about 7825.6335845732. The cubic root of 61240541 is about 394.1664653416.

Adding to 61240541 its reverse (14504216), we get a palindrome (75744757).

The spelling of 61240541 in words is "sixty-one million, two hundred forty thousand, five hundred forty-one".