61438583 has 2 divisors, whose sum is σ = 61438584. Its totient is φ = 61438582.

The previous prime is 61438579. The next prime is 61438633. The reversal of 61438583 is 38583416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61438583 - 2² = 61438579 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61438523) 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, 30719291 + 30719292.

It is an arithmetic number, because the mean of its divisors is an integer number (30719292).

Almost surely, 2^61438583 is an apocalyptic number.

61438583 is a deficient number, since it is larger than the sum of its proper divisors (1).

61438583 is an equidigital number, since it uses as much as digits as its factorization.

61438583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 61438583 is about 7838.2767876619. The cubic root of 61438583 is about 394.5908983431.

The spelling of 61438583 in words is "sixty-one million, four hundred thirty-eight thousand, five hundred eighty-three".