61140349 has 2 divisors, whose sum is σ = 61140350. Its totient is φ = 61140348.

The previous prime is 61140341. The next prime is 61140377. The reversal of 61140349 is 94304116.

It is an a-pointer prime, because the next prime (61140377) can be obtained adding 61140349 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 4439449 = 7530^2 + 2107^2 .

It is a cyclic number.

It is not a de Polignac number, because 61140349 - 2³ = 61140341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61140341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30570174 + 30570175.

It is an arithmetic number, because the mean of its divisors is an integer number (30570175).

Almost surely, 2^61140349 is an apocalyptic number.

It is an amenable number.

61140349 is a deficient number, since it is larger than the sum of its proper divisors (1).

61140349 is an equidigital number, since it uses as much as digits as its factorization.

61140349 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 61140349 is about 7819.2294377387. The cubic root of 61140349 is about 393.9513905864.

The spelling of 61140349 in words is "sixty-one million, one hundred forty thousand, three hundred forty-nine".