61141391 has 2 divisors, whose sum is σ = 61141392. Its totient is φ = 61141390.

The previous prime is 61141387. The next prime is 61141403. The reversal of 61141391 is 19314116.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61141391 - 2² = 61141387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61141391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61141351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30570695 + 30570696.

It is an arithmetic number, because the mean of its divisors is an integer number (30570696).

Almost surely, 2^61141391 is an apocalyptic number.

61141391 is a deficient number, since it is larger than the sum of its proper divisors (1).

61141391 is an equidigital number, since it uses as much as digits as its factorization.

61141391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 26.

The square root of 61141391 is about 7819.2960680614. The cubic root of 61141391 is about 393.9536285794.

The spelling of 61141391 in words is "sixty-one million, one hundred forty-one thousand, three hundred ninety-one".