1245564045 has 48 divisors (see below), whose sum is σ = 2395224000. Its totient is φ = 593660160.

The previous prime is 1245564043. The next prime is 1245564059. The reversal of 1245564045 is 5404655421.

1245564045 is a `hidden beast` number, since 1 + 2 + 4 + 5 + 5 + 640 + 4 + 5 = 666.

It is not a de Polignac number, because 1245564045 - 2¹ = 1245564043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245564043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7881 + ... + 50529.

It is an arithmetic number, because the mean of its divisors is an integer number (49900500).

Almost surely, 2^1245564045 is an apocalyptic number.

1245564045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245564045 is a deficient number, since it is larger than the sum of its proper divisors (1149659955).

1245564045 is a wasteful number, since it uses less digits than its factorization.

1245564045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42730 (or 42727 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The square root of 1245564045 is about 35292.5494261891. The cubic root of 1245564045 is about 1075.9415713057.

The spelling of 1245564045 in words is "one billion, two hundred forty-five million, five hundred sixty-four thousand, forty-five".