61372319 has 2 divisors, whose sum is σ = 61372320. Its totient is φ = 61372318.

The previous prime is 61372291. The next prime is 61372327. The reversal of 61372319 is 91327316.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61372319 is a prime.

It is a super-2 number, since 2×61372319² = 7533123078875522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61377319) 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, 30686159 + 30686160.

It is an arithmetic number, because the mean of its divisors is an integer number (30686160).

Almost surely, 2^61372319 is an apocalyptic number.

61372319 is a deficient number, since it is larger than the sum of its proper divisors (1).

61372319 is an equidigital number, since it uses as much as digits as its factorization.

61372319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 61372319 is about 7834.0486978318. The cubic root of 61372319 is about 394.4489865568.

The spelling of 61372319 in words is "sixty-one million, three hundred seventy-two thousand, three hundred nineteen".