249641053 has 2 divisors, whose sum is σ = 249641054. Its totient is φ = 249641052.

The previous prime is 249641033. The next prime is 249641071. The reversal of 249641053 is 350146942.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150479289 + 99161764 = 12267^2 + 9958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249641053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249641003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124820526 + 124820527.

It is an arithmetic number, because the mean of its divisors is an integer number (124820527).

Almost surely, 2^249641053 is an apocalyptic number.

It is an amenable number.

249641053 is a deficient number, since it is larger than the sum of its proper divisors (1).

249641053 is an equidigital number, since it uses as much as digits as its factorization.

249641053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 249641053 is about 15800.0333227497. The cubic root of 249641053 is about 629.6588839498.

Adding to 249641053 its reverse (350146942), we get a palindrome (599787995).

The spelling of 249641053 in words is "two hundred forty-nine million, six hundred forty-one thousand, fifty-three".