245772729 has 24 divisors (see below), whose sum is σ = 366143232. Its totient is φ = 158777280.

The previous prime is 245772727. The next prime is 245772749. The reversal of 245772729 is 927277542.

245772729 is a `hidden beast` number, since 2 + 4 + 577 + 2 + 72 + 9 = 666.

It is not a de Polignac number, because 245772729 - 2¹ = 245772727 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245772727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40749 + ... + 46389.

It is an arithmetic number, because the mean of its divisors is an integer number (15255968).

Almost surely, 2^245772729 is an apocalyptic number.

It is an amenable number.

245772729 is a deficient number, since it is larger than the sum of its proper divisors (120370503).

245772729 is a wasteful number, since it uses less digits than its factorization.

245772729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797 (or 5794 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 245772729 is about 15677.1403323438. The cubic root of 245772729 is about 626.3896367124.

The spelling of 245772729 in words is "two hundred forty-five million, seven hundred seventy-two thousand, seven hundred twenty-nine".