1345572461 has 2 divisors, whose sum is σ = 1345572462. Its totient is φ = 1345572460.

The previous prime is 1345572443. The next prime is 1345572499. The reversal of 1345572461 is 1642755431.

It is an a-pointer prime, because the next prime (1345572499) can be obtained adding 1345572461 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740166436 + 605406025 = 27206^2 + 24605^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345572461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345572061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672786230 + 672786231.

It is an arithmetic number, because the mean of its divisors is an integer number (672786231).

Almost surely, 2^1345572461 is an apocalyptic number.

It is an amenable number.

1345572461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345572461 is an equidigital number, since it uses as much as digits as its factorization.

1345572461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 1345572461 is about 36682.0454854960. The cubic root of 1345572461 is about 1103.9998897837. Note that the first 3 decimals are identical.

The spelling of 1345572461 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, four hundred sixty-one".