1345520461 has 2 divisors, whose sum is σ = 1345520462. Its totient is φ = 1345520460.

The previous prime is 1345520419. The next prime is 1345520479. The reversal of 1345520461 is 1640255431.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1301044900 + 44475561 = 36070^2 + 6669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345520461 - 2⁹ = 1345519949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345526461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672760230 + 672760231.

It is an arithmetic number, because the mean of its divisors is an integer number (672760231).

Almost surely, 2^1345520461 is an apocalyptic number.

It is an amenable number.

1345520461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345520461 is an equidigital number, since it uses as much as digits as its factorization.

1345520461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1345520461 is about 36681.3366850228. The cubic root of 1345520461 is about 1103.9856681456.

Adding to 1345520461 its reverse (1640255431), we get a palindrome (2985775892).

The spelling of 1345520461 in words is "one billion, three hundred forty-five million, five hundred twenty thousand, four hundred sixty-one".