61405349 has 2 divisors, whose sum is σ = 61405350. Its totient is φ = 61405348.

The previous prime is 61405319. The next prime is 61405367. The reversal of 61405349 is 94350416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 174724 = 7825^2 + 418^2 .

It is a cyclic number.

It is not a de Polignac number, because 61405349 - 2¹² = 61401253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61405319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30702674 + 30702675.

It is an arithmetic number, because the mean of its divisors is an integer number (30702675).

Almost surely, 2^61405349 is an apocalyptic number.

It is an amenable number.

61405349 is a deficient number, since it is larger than the sum of its proper divisors (1).

61405349 is an equidigital number, since it uses as much as digits as its factorization.

61405349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 61405349 is about 7836.1565196211. The cubic root of 61405349 is about 394.5197367671.

The spelling of 61405349 in words is "sixty-one million, four hundred five thousand, three hundred forty-nine".