61283513 has 2 divisors, whose sum is σ = 61283514. Its totient is φ = 61283512.

The previous prime is 61283429. The next prime is 61283543. The reversal of 61283513 is 31538216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61277584 + 5929 = 7828^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 61283513 - 2¹⁰ = 61282489 is a prime.

It is not a weakly prime, because it can be changed into another prime (61283543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30641756 + 30641757.

It is an arithmetic number, because the mean of its divisors is an integer number (30641757).

Almost surely, 2^61283513 is an apocalyptic number.

It is an amenable number.

61283513 is a deficient number, since it is larger than the sum of its proper divisors (1).

61283513 is an equidigital number, since it uses as much as digits as its factorization.

61283513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 61283513 is about 7828.3786954899. The cubic root of 61283513 is about 394.2586382761.

The spelling of 61283513 in words is "sixty-one million, two hundred eighty-three thousand, five hundred thirteen".