61074521 has 2 divisors, whose sum is σ = 61074522. Its totient is φ = 61074520.

The previous prime is 61074511. The next prime is 61074527. The reversal of 61074521 is 12547016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60528400 + 546121 = 7780^2 + 739^2 .

It is a cyclic number.

It is not a de Polignac number, because 61074521 - 2¹⁸ = 60812377 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (61074527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30537260 + 30537261.

It is an arithmetic number, because the mean of its divisors is an integer number (30537261).

Almost surely, 2^61074521 is an apocalyptic number.

It is an amenable number.

61074521 is a deficient number, since it is larger than the sum of its proper divisors (1).

61074521 is an equidigital number, since it uses as much as digits as its factorization.

61074521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 61074521 is about 7815.0189379169. The cubic root of 61074521 is about 393.8099545558.

The spelling of 61074521 in words is "sixty-one million, seventy-four thousand, five hundred twenty-one".