61043149 has 2 divisors, whose sum is σ = 61043150. Its totient is φ = 61043148.

The previous prime is 61043113. The next prime is 61043183. The reversal of 61043149 is 94134016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 7387524 = 7325^2 + 2718^2 .

It is a cyclic number.

It is not a de Polignac number, because 61043149 - 2¹³ = 61034957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61043189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30521574 + 30521575.

It is an arithmetic number, because the mean of its divisors is an integer number (30521575).

Almost surely, 2^61043149 is an apocalyptic number.

It is an amenable number.

61043149 is a deficient number, since it is larger than the sum of its proper divisors (1).

61043149 is an equidigital number, since it uses as much as digits as its factorization.

61043149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 61043149 is about 7813.0115192543. The cubic root of 61043149 is about 393.7425138746.

The spelling of 61043149 in words is "sixty-one million, forty-three thousand, one hundred forty-nine".