61261219 has 2 divisors, whose sum is σ = 61261220. Its totient is φ = 61261218.

The previous prime is 61261199. The next prime is 61261229. The reversal of 61261219 is 91216216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61261219 - 2¹⁹ = 60736931 is a prime.

It is a super-2 number, since 2×61261219² = 7505873906731922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61261229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30630609 + 30630610.

It is an arithmetic number, because the mean of its divisors is an integer number (30630610).

Almost surely, 2^61261219 is an apocalyptic number.

61261219 is a deficient number, since it is larger than the sum of its proper divisors (1).

61261219 is an equidigital number, since it uses as much as digits as its factorization.

61261219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 61261219 is about 7826.9546440490. The cubic root of 61261219 is about 394.2108240669.

The spelling of 61261219 in words is "sixty-one million, two hundred sixty-one thousand, two hundred nineteen".