61287383 has 2 divisors, whose sum is σ = 61287384. Its totient is φ = 61287382.

The previous prime is 61287367. The next prime is 61287409. The reversal of 61287383 is 38378216.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61287383 - 2⁴ = 61287367 is a prime.

It is a super-2 number, since 2×61287383² = 7512286629977378, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61287323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30643691 + 30643692.

It is an arithmetic number, because the mean of its divisors is an integer number (30643692).

Almost surely, 2^61287383 is an apocalyptic number.

61287383 is a deficient number, since it is larger than the sum of its proper divisors (1).

61287383 is an equidigital number, since it uses as much as digits as its factorization.

61287383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 61287383 is about 7828.6258692059. The cubic root of 61287383 is about 394.2669371303.

The spelling of 61287383 in words is "sixty-one million, two hundred eighty-seven thousand, three hundred eighty-three".