61495519 has 2 divisors, whose sum is σ = 61495520. Its totient is φ = 61495518.

The previous prime is 61495513. The next prime is 61495543. The reversal of 61495519 is 91559416.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61495519 - 2²⁵ = 27941087 is a prime.

It is a super-2 number, since 2×61495519² = 7563397714158722, 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 (61495513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30747759 + 30747760.

It is an arithmetic number, because the mean of its divisors is an integer number (30747760).

Almost surely, 2^61495519 is an apocalyptic number.

61495519 is a deficient number, since it is larger than the sum of its proper divisors (1).

61495519 is an equidigital number, since it uses as much as digits as its factorization.

61495519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48600, while the sum is 40.

The square root of 61495519 is about 7841.9078673496. The cubic root of 61495519 is about 394.7127516904.

The spelling of 61495519 in words is "sixty-one million, four hundred ninety-five thousand, five hundred nineteen".