61381093 has 2 divisors, whose sum is σ = 61381094. Its totient is φ = 61381092.

The previous prime is 61381037. The next prime is 61381123. The reversal of 61381093 is 39018316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44595684 + 16785409 = 6678^2 + 4097^2 .

It is a cyclic number.

It is not a de Polignac number, because 61381093 - 2⁹ = 61380581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61381193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30690546 + 30690547.

It is an arithmetic number, because the mean of its divisors is an integer number (30690547).

Almost surely, 2^61381093 is an apocalyptic number.

It is an amenable number.

61381093 is a deficient number, since it is larger than the sum of its proper divisors (1).

61381093 is an equidigital number, since it uses as much as digits as its factorization.

61381093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 61381093 is about 7834.6086692317. The cubic root of 61381093 is about 394.4677829270.

The spelling of 61381093 in words is "sixty-one million, three hundred eighty-one thousand, ninety-three".