61030457 has 2 divisors, whose sum is σ = 61030458. Its totient is φ = 61030456.

The previous prime is 61030447. The next prime is 61030469. The reversal of 61030457 is 75403016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40500496 + 20529961 = 6364^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 61030457 - 2⁴ = 61030441 is a prime.

It is not a weakly prime, because it can be changed into another prime (61030447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515228 + 30515229.

It is an arithmetic number, because the mean of its divisors is an integer number (30515229).

Almost surely, 2^61030457 is an apocalyptic number.

It is an amenable number.

61030457 is a deficient number, since it is larger than the sum of its proper divisors (1).

61030457 is an equidigital number, since it uses as much as digits as its factorization.

61030457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 61030457 is about 7812.1992422109. The cubic root of 61030457 is about 393.7152231988.

The spelling of 61030457 in words is "sixty-one million, thirty thousand, four hundred fifty-seven".