61519 has 2 divisors, whose sum is σ = 61520. Its totient is φ = 61518.

The previous prime is 61511. The next prime is 61543. The reversal of 61519 is 91516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61519 - 2³ = 61511 is a prime.

It is a super-2 number, since 2×61519² = 7569174722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30759 + 30760.

It is an arithmetic number, because the mean of its divisors is an integer number (30760).

2⁶¹⁵¹⁹ is an apocalyptic number.

61519 is a deficient number, since it is larger than the sum of its proper divisors (1).

61519 is an equidigital number, since it uses as much as digits as its factorization.

61519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 61519 is about 248.0302400918. The cubic root of 61519 is about 39.4762983376.

The spelling of 61519 in words is "sixty-one thousand, five hundred nineteen".