1561417007 has 2 divisors, whose sum is σ = 1561417008. Its totient is φ = 1561417006.

The previous prime is 1561417001. The next prime is 1561417073. The reversal of 1561417007 is 7007141651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1561417007 - 2⁶ = 1561416943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1561417001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780708503 + 780708504.

It is an arithmetic number, because the mean of its divisors is an integer number (780708504).

Almost surely, 2^1561417007 is an apocalyptic number.

1561417007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1561417007 is an equidigital number, since it uses as much as digits as its factorization.

1561417007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1561417007 is about 39514.7694792719. The cubic root of 1561417007 is about 1160.1290500006.

Adding to 1561417007 its reverse (7007141651), we get a palindrome (8568558658).

The spelling of 1561417007 in words is "one billion, five hundred sixty-one million, four hundred seventeen thousand, seven".