249355137 has 8 divisors (see below), whose sum is σ = 343938240. Its totient is φ = 160504400.

The previous prime is 249355111. The next prime is 249355147. The reversal of 249355137 is 731553942.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 249355137 - 2¹¹ = 249353089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 249355095 and 249355104.

It is not an unprimeable number, because it can be changed into a prime (249355147) 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, 1432989 + ... + 1433162.

It is an arithmetic number, because the mean of its divisors is an integer number (42992280).

Almost surely, 2^249355137 is an apocalyptic number.

It is an amenable number.

249355137 is a deficient number, since it is larger than the sum of its proper divisors (94583103).

249355137 is a wasteful number, since it uses less digits than its factorization.

249355137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866183.

The product of its digits is 113400, while the sum is 39.

The square root of 249355137 is about 15790.9827749890. The cubic root of 249355137 is about 629.4184075793.

It can be divided in two parts, 2493 and 55137, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 249355137 in words is "two hundred forty-nine million, three hundred fifty-five thousand, one hundred thirty-seven".