1345572241 has 4 divisors (see below), whose sum is σ = 1449077812. Its totient is φ = 1242066672.

The previous prime is 1345572233. The next prime is 1345572251. The reversal of 1345572241 is 1422755431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 223054225 + 1122518016 = 14935^2 + 33504^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345572241 - 2³ = 1345572233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1345572197 and 1345572206.

It is not an unprimeable number, because it can be changed into a prime (1345572251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51752766 + ... + 51752791.

It is an arithmetic number, because the mean of its divisors is an integer number (362269453).

Almost surely, 2^1345572241 is an apocalyptic number.

It is an amenable number.

1345572241 is a deficient number, since it is larger than the sum of its proper divisors (103505571).

1345572241 is a wasteful number, since it uses less digits than its factorization.

1345572241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103505570.

The product of its digits is 33600, while the sum is 34.

The square root of 1345572241 is about 36682.0424867537. The cubic root of 1345572241 is about 1103.9998296160. Note that the first 3 decimals are identical.

The spelling of 1345572241 in words is "one billion, three hundred forty-five million, five hundred seventy-two thousand, two hundred forty-one".