1245545201 has 4 divisors (see below), whose sum is σ = 1246335600. Its totient is φ = 1244754804.

The previous prime is 1245545123. The next prime is 1245545207. The reversal of 1245545201 is 1025455421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1245545201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1245545207) 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, 392831 + ... + 395988.

It is an arithmetic number, because the mean of its divisors is an integer number (311583900).

Almost surely, 2^1245545201 is an apocalyptic number.

It is an amenable number.

1245545201 is a deficient number, since it is larger than the sum of its proper divisors (790399).

1245545201 is an equidigital number, since it uses as much as digits as its factorization.

1245545201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790398.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1245545201 is about 35292.2824566505. The cubic root of 1245545201 is about 1075.9361453449.

The spelling of 1245545201 in words is "one billion, two hundred forty-five million, five hundred forty-five thousand, two hundred one".