2545563651 has 8 divisors (see below), whose sum is σ = 3394581840. Its totient is φ = 1696793952.

The previous prime is 2545563649. The next prime is 2545563661. The reversal of 2545563651 is 1563655452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2545563651 - 2¹ = 2545563649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545563661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36736 + ... + 80253.

It is an arithmetic number, because the mean of its divisors is an integer number (424322730).

Almost surely, 2^2545563651 is an apocalyptic number.

2545563651 is a deficient number, since it is larger than the sum of its proper divisors (849018189).

2545563651 is a wasteful number, since it uses less digits than its factorization.

2545563651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124245.

The product of its digits is 540000, while the sum is 42.

The square root of 2545563651 is about 50453.5791693711. The cubic root of 2545563651 is about 1365.4044700288.

The spelling of 2545563651 in words is "two billion, five hundred forty-five million, five hundred sixty-three thousand, six hundred fifty-one".