249768051 has 16 divisors (see below), whose sum is σ = 362197920. Its totient is φ = 152179200.

The previous prime is 249768047. The next prime is 249768061. The reversal of 249768051 is 150867942.

It is not a de Polignac number, because 249768051 - 2² = 249768047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249767994 and 249768012.

It is not an unprimeable number, because it can be changed into a prime (249768031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27766 + ... + 35643.

It is an arithmetic number, because the mean of its divisors is an integer number (22637370).

Almost surely, 2^249768051 is an apocalyptic number.

249768051 is a deficient number, since it is larger than the sum of its proper divisors (112429869).

249768051 is a wasteful number, since it uses less digits than its factorization.

249768051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63526.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 249768051 is about 15804.0517273261. The cubic root of 249768051 is about 629.7656397120.

The spelling of 249768051 in words is "two hundred forty-nine million, seven hundred sixty-eight thousand, fifty-one".