561376379 has 2 divisors, whose sum is σ = 561376380. Its totient is φ = 561376378.

The previous prime is 561376367. The next prime is 561376391. The reversal of 561376379 is 973673165.

It is a balanced prime because it is at equal distance from previous prime (561376367) and next prime (561376391).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561376379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (561376279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280688189 + 280688190.

It is an arithmetic number, because the mean of its divisors is an integer number (280688190).

Almost surely, 2^561376379 is an apocalyptic number.

561376379 is a deficient number, since it is larger than the sum of its proper divisors (1).

561376379 is an equidigital number, since it uses as much as digits as its factorization.

561376379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 714420, while the sum is 47.

The square root of 561376379 is about 23693.3825993673. The cubic root of 561376379 is about 824.9317991984.

The spelling of 561376379 in words is "five hundred sixty-one million, three hundred seventy-six thousand, three hundred seventy-nine".