61380853 has 2 divisors, whose sum is σ = 61380854. Its totient is φ = 61380852.

The previous prime is 61380841. The next prime is 61380881. The reversal of 61380853 is 35808316.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61355889 + 24964 = 7833^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 61380853 - 2¹⁷ = 61249781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61380653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30690426 + 30690427.

It is an arithmetic number, because the mean of its divisors is an integer number (30690427).

Almost surely, 2^61380853 is an apocalyptic number.

It is an amenable number.

61380853 is a deficient number, since it is larger than the sum of its proper divisors (1).

61380853 is an equidigital number, since it uses as much as digits as its factorization.

61380853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 61380853 is about 7834.5933525614. The cubic root of 61380853 is about 394.4672688035.

The spelling of 61380853 in words is "sixty-one million, three hundred eighty thousand, eight hundred fifty-three".